Outlook add-in ribbon Icon - outlook

I am trying to upload my outlook add-in but I get a rejection from Microsoft, that my ribbon icon can't be the default icon.
but I am quite of sure that I have done everything right on my manifest:
...
<IconUrl DefaultValue="https://outlook.rocalytics.net/assets/icon-80.png" />
...
<Control>
...
<Icon>
<bt:Image size="16" resid="icon16" />
<bt:Image size="32" resid="icon32" />
<bt:Image size="80" resid="icon80" />
</Icon>
...
</Control>
...
<Resources>
<bt:Images>
<bt:Image id="icon16" DefaultValue="https://outlook.rocalytics.net/assets/icon-16.png"/>
<bt:Image id="icon32" DefaultValue="https://outlook.rocalytics.net/assets/icon-32.png"/>
<bt:Image id="icon80" DefaultValue="https://outlook.rocalytics.net/assets/icon-80.png"/>
</bt:Images>
</Resources>
thanks for helping

Related

The identity API is not supported for this add-in. - Error code 13000 - Outlook Addin

I am creating an SSO Add-in and I am just calling this to give it a try (getAccessToken):
async function getUserData() {
try {
let usertokenEncoded = await OfficeRuntime.auth.getAccessToken();
let usertoken = jwt_decode(usertokenEncoded);
console.log(usertoken);
} catch (exception) {
if (exception.code === 13003) {
} else {
console.log(exception);
}
}
}
I am receiving an error saying :
The identity API is not supported for this add-in. 13000
I believe it is something to do with my manifest file and I don't see any trouble with it.
I have put it at the end of the as per documentation. Here is the code I have used.
<WebApplicationInfo>
<Id>97d836ee-5c77-4707-9d54-be09716fdxxx</Id>
<Resource>api://localhost:3000/97d836ee-5c77-4707-9d54-be09716fdxxx</Resource>
<Scopes>
<Scope>Files.Read.All</Scope>
<Scope>offline_access</Scope>
<Scope>openid</Scope>
<Scope>profile</Scope>
</Scopes>
</WebApplicationInfo>
</VersionOverrides>
</OfficeApp>
I cannot see any problem with it but it doesn't like something. Can anyone spot the problem ?
Here is my office client
Here is my part of the XML:
<VersionOverrides xmlns="http://schemas.microsoft.com/office/mailappversionoverrides" xsi:type="VersionOverridesV1_0">
<VersionOverrides xmlns="http://schemas.microsoft.com/office/mailappversionoverrides" xsi:type="VersionOverridesV1_1">
<Hosts>
<Host xsi:type="MailHost">
<DesktopFormFactor>
<FunctionFile resid="Commands.Url"/>
<ExtensionPoint xsi:type="MessageReadCommandSurface">
<OfficeTab id="TabDefault">
<Group id="msgReadGroup">
<Label resid="GroupLabel"/>
<Control xsi:type="Button" id="msgReadOpenPaneButton">
<Label resid="TaskpaneButton.Label"/>
<Supertip>
<Title resid="TaskpaneButton.Label"/>
<Description resid="TaskpaneButton.Tooltip"/>
</Supertip>
<Icon>
<bt:Image size="16" resid="Icon.16x16"/>
<bt:Image size="32" resid="Icon.32x32"/>
<bt:Image size="80" resid="Icon.80x80"/>
</Icon>
<Action xsi:type="ShowTaskpane">
<SourceLocation resid="Taskpane.Url"/>
</Action>
</Control>
<Control xsi:type="Button" id="ActionButton">
<Label resid="ActionButton.Label"/>
<Supertip>
<Title resid="ActionButton.Label"/>
<Description resid="ActionButton.Tooltip"/>
</Supertip>
<Icon>
<bt:Image size="16" resid="Icon.16x16"/>
<bt:Image size="32" resid="Icon.32x32"/>
<bt:Image size="80" resid="Icon.80x80"/>
</Icon>
<Action xsi:type="ExecuteFunction">
<FunctionName>action</FunctionName>
</Action>
</Control>
</Group>
</OfficeTab>
</ExtensionPoint>
</DesktopFormFactor>
</Host>
</Hosts>
<Resources>
<bt:Images>
<bt:Image id="Icon.16x16" DefaultValue="https://localhost:3000/assets/icon-16.png"/>
<bt:Image id="Icon.32x32" DefaultValue="https://localhost:3000/assets/icon-32.png"/>
<bt:Image id="Icon.80x80" DefaultValue="https://localhost:3000/assets/icon-80.png"/>
</bt:Images>
<bt:Urls>
<bt:Url id="Commands.Url" DefaultValue="https://localhost:3000/commands.html"/>
<bt:Url id="Taskpane.Url" DefaultValue="https://localhost:3000/taskpane.html"/>
</bt:Urls>
<bt:ShortStrings>
<bt:String id="GroupLabel" DefaultValue="Contoso Add-in"/>
<bt:String id="TaskpaneButton.Label" DefaultValue="Show Taskpane"/>
<bt:String id="ActionButton.Label" DefaultValue="Perform an action"/>
</bt:ShortStrings>
<bt:LongStrings>
<bt:String id="TaskpaneButton.Tooltip" DefaultValue="Opens a pane displaying all available properties."/>
<bt:String id="ActionButton.Tooltip" DefaultValue="Perform an action when clicked."/>
</bt:LongStrings>
</Resources>
<WebApplicationInfo>
<Id>97d836ee-5c77-4707-9d54-be09716fxxxx</Id>
<Resource>api://localhost:3000/97d836ee-5c77-4707-9d54-be09716fxxxx</Resource>
<Scopes>
<Scope>Files.Read</Scope>
<Scope>openid</Scope>
<Scope>profile</Scope>
</Scopes>
</WebApplicationInfo>
</VersionOverrides>
</VersionOverrides>
</OfficeApp>
I have also added this code in to check that my client has the requirement set for IdentityAPI and it has :
function IsIdentitySupported() {
if (Office.context.requirements.isSetSupported("IdentityAPI", "1.3")) {
console.log("Supported");
}
else {
// Provide alternate flow/logic.
}
}
Just added my code to a button in React and it still comes back with :
Just as a side note - this is failing also on outlook on the web with exactly the same error.
When I create scaffold another project with Yoman and then use configure-sso npm command, I get :
Error: Unable to set tenant reply urls.
ERROR: Bad Request({"error":{"code":"Request_BadRequest","message":"Invalid object identifier 'undefined'.","innerError":{"date":"2022-10-12T07:00:11","request-id":"972a0b4e-2691-4fe7-a8c6-1f247c2333f5","client-request-id":"972a0b4e-2691-4fe7-a8c6-1f247c2333f5"}}})

The Outlook version specified should support the Identity API 1.3 requirement set. See Outlook client support for all supported versions.
Also you my find your Outlook version listed in the Update History page.
Try to scaffold a new add-in project and then use the configure-sso package to configure it for using SSO like described in the Single sign-on (SSO) quick start.

I ran into a similar issue, and I had to ensure the appropriate VersionOverides are specified. In your manifest, it seems version 1.1 may not be specified appropriately. Try updating to the following:
<VersionOverrides xmlns="http://schemas.microsoft.com/office/mailappversionoverrides" xsi:type="VersionOverridesV1_0">
<VersionOverrides xmlns="http://schemas.microsoft.com/office/mailappversionoverrides/1.1" xsi:type="VersionOverridesV1_1">
<Hosts>
<Host xsi:type="MailHost">
<DesktopFormFactor>
<FunctionFile resid="Commands.Url"/>
<ExtensionPoint xsi:type="MessageReadCommandSurface">
<OfficeTab id="TabDefault">
<Group id="msgReadGroup">
<Label resid="GroupLabel"/>
<Control xsi:type="Button" id="msgReadOpenPaneButton">
<Label resid="TaskpaneButton.Label"/>
<Supertip>
<Title resid="TaskpaneButton.Label"/>
<Description resid="TaskpaneButton.Tooltip"/>
</Supertip>
<Icon>
<bt:Image size="16" resid="Icon.16x16"/>
<bt:Image size="32" resid="Icon.32x32"/>
<bt:Image size="80" resid="Icon.80x80"/>
</Icon>
<Action xsi:type="ShowTaskpane">
<SourceLocation resid="Taskpane.Url"/>
</Action>
</Control>
<Control xsi:type="Button" id="ActionButton">
<Label resid="ActionButton.Label"/>
<Supertip>
<Title resid="ActionButton.Label"/>
<Description resid="ActionButton.Tooltip"/>
</Supertip>
<Icon>
<bt:Image size="16" resid="Icon.16x16"/>
<bt:Image size="32" resid="Icon.32x32"/>
<bt:Image size="80" resid="Icon.80x80"/>
</Icon>
<Action xsi:type="ExecuteFunction">
<FunctionName>action</FunctionName>
</Action>
</Control>
</Group>
</OfficeTab>
</ExtensionPoint>
</DesktopFormFactor>
</Host>
</Hosts>
<Resources>
<bt:Images>
<bt:Image id="Icon.16x16" DefaultValue="https://localhost:3000/assets/icon-16.png"/>
<bt:Image id="Icon.32x32" DefaultValue="https://localhost:3000/assets/icon-32.png"/>
<bt:Image id="Icon.80x80" DefaultValue="https://localhost:3000/assets/icon-80.png"/>
</bt:Images>
<bt:Urls>
<bt:Url id="Commands.Url" DefaultValue="https://localhost:3000/commands.html"/>
<bt:Url id="Taskpane.Url" DefaultValue="https://localhost:3000/taskpane.html"/>
</bt:Urls>
<bt:ShortStrings>
<bt:String id="GroupLabel" DefaultValue="Contoso Add-in"/>
<bt:String id="TaskpaneButton.Label" DefaultValue="Show Taskpane"/>
<bt:String id="ActionButton.Label" DefaultValue="Perform an action"/>
</bt:ShortStrings>
<bt:LongStrings>
<bt:String id="TaskpaneButton.Tooltip" DefaultValue="Opens a pane displaying all available properties."/>
<bt:String id="ActionButton.Tooltip" DefaultValue="Perform an action when clicked."/>
</bt:LongStrings>
</Resources>
<WebApplicationInfo>
<Id>{Client_ID}</Id>
<Resource>api://localhost:3000/{Client_ID}</Resource>
<Scopes>
<Scope>Files.Read</Scope>
<Scope>openid</Scope>
<Scope>profile</Scope>
</Scopes>
</WebApplicationInfo>
</VersionOverrides>
</VersionOverrides>
</OfficeApp>

Add-in silently fails to install on Mac Outlook

I am developing an add-in for Outlook. My manifest installs without problems in Outlook for the web, but when I try to install the manifest in Outlook for Mac (v16.43), it appears to succeed, but after closing the add-ins window and re-opening it, the add-in has disappeared.
I have generated some logs from Outlook, and see this error:
04/12/2020 14:29:13 Unexpected Manifest Issue encountered while parsing manifest,
add-in ID : <id>, Location : Error at element "Action" :
Add-in manifest parsing encountered an unexpected child node, Line=90, CharPosition=16
The relevant parts of the manifest are below. The Action element referred to in the error is the one in the MobileFormFactor section. If I remove the MobileFormFactor section, then the manifest installs successfully.
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<OfficeApp xmlns="http://schemas.microsoft.com/office/appforoffice/1.1" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:bt="http://schemas.microsoft.com/office/officeappbasictypes/1.0" xmlns:mailappor="http://schemas.microsoft.com/office/mailappversionoverrides/1.0" xsi:type="MailApp">
...
<VersionOverrides xmlns="http://schemas.microsoft.com/office/mailappversionoverrides" xsi:type="VersionOverridesV1_0">
<VersionOverrides xmlns="http://schemas.microsoft.com/office/mailappversionoverrides/1.1" xsi:type="VersionOverridesV1_1">
<Description resid="residDescription"></Description>
<Requirements>
<bt:Sets>
<bt:Set Name="Mailbox" MinVersion="1.3"/>
</bt:Sets>
</Requirements>
<Hosts>
<Host xsi:type="MailHost">
<DesktopFormFactor>
<ExtensionPoint xsi:type="AppointmentOrganizerCommandSurface">
<OfficeTab id="TabDefault">
<Group id="apptComposeGroup">
<Label resid="residDescription"/>
<Control xsi:type="Button" id="insertMeetingButton">
<Label resid="addLabel"/>
<Supertip>
<Title resid="addLabel"/>
<Description resid="residTooltip"/>
</Supertip>
<Icon>
<bt:Image size="16" resid="icon-16"/>
<bt:Image size="32" resid="icon-32"/>
<bt:Image size="48" resid="icon-48"/>
<bt:Image size="64" resid="icon-64"/>
<bt:Image size="80" resid="icon-80"/>
</Icon>
<Action xsi:type="ShowTaskpane">
<SourceLocation resid="residTaskpaneUrl"/>
</Action>
</Control>
</Group>
</OfficeTab>
</ExtensionPoint>
</DesktopFormFactor>
<MobileFormFactor>
<ExtensionPoint xsi:type="MobileOnlineMeetingCommandSurface">
<Control xsi:type="MobileButton" id="insertMeetingButton">
<Label resid="prodName"/>
<Icon>
<bt:Image size="25" scale="1" resid="icon-grey16"/>
<bt:Image size="25" scale="2" resid="icon-grey16"/>
<bt:Image size="25" scale="3" resid="icon-grey16"/>
<bt:Image size="32" scale="1" resid="icon-grey32"/>
<bt:Image size="32" scale="2" resid="icon-grey32"/>
<bt:Image size="32" scale="3" resid="icon-grey32"/>
<bt:Image size="48" scale="1" resid="icon-grey48"/>
<bt:Image size="48" scale="2" resid="icon-grey48"/>
<bt:Image size="48" scale="3" resid="icon-grey48"/>
</Icon>
<Action xsi:type="ShowTaskpane">
<SourceLocation resid="residTaskpaneUrl"/>
</Action>
</Control>
</ExtensionPoint>
</MobileFormFactor>
</Host>
</Hosts>
...
</VersionOverrides>
</VersionOverrides>
</OfficeApp>

Microsoft Outlook add-in change request

I have developed an outlook add-in and posted on Microsoft appstore.
But I got validation error report with change request as below:
4.12.1 Add in commands do not appear in the Outlook 2016 Desktop Client or in the Outlook 2016 Client on Mac - there appears to be an issue in the version overrides element in your manifest file
This is the manifest:
<OfficeApp
xmlns="http://schemas.microsoft.com/office/appforoffice/1.1"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:bt="http://schemas.microsoft.com/office/officeappbasictypes/1.0"
xmlns:mailappor="http://schemas.microsoft.com/office/mailappversionoverrides/1.0"
xsi:type="MailApp">
<!-- Begin Basic Settings: Add-in metadata, used for all versions of Office unless override provided. -->
<!-- IMPORTANT! Id must be unique for your add-in, if you reuse this manifest ensure that you change this id to a new GUID. -->
<Id>a0fc93fd-3de0-4a0a-b856-8f5e15c8f91d</Id>
<!--Version. Updates from the store only get triggered if there is a version change. -->
<Version>1.0.0.0</Version>
<ProviderName>WritingAssistant</ProviderName>
<DefaultLocale>en-US</DefaultLocale>
<!-- The display name of your add-in. Used on the store and various places of the Office UI such as the add-ins dialog. -->
<DisplayName DefaultValue="WritingAssistant for Outlook" />
<Description DefaultValue="The fastest, easiest way to improve your grammar and writing."/>
<IconUrl DefaultValue="https://outlookplugin.writing-assistant.com/Images/logo-64.png"/>
<HighResolutionIconUrl DefaultValue="https://outlookplugin.writing-assistant.com/Images/logo-80.png"/>
<SupportUrl DefaultValue="https://www.writing-assistant.com/contact.htm" />
<!-- Domains that will be allowed when navigating. For example, if you use ShowTaskpane and then have an href link, navigation will only be allowed if the domain is on this list. -->
<AppDomains>
<AppDomain>AppDomain1</AppDomain>
<AppDomain>AppDomain2</AppDomain>
<AppDomain>AppDomain3</AppDomain>
</AppDomains>
<!--End Basic Settings. -->
<Hosts>
<Host Name="Mailbox" />
</Hosts>
<Requirements>
<Sets>
<Set Name="Mailbox" MinVersion="1.5" />
</Sets>
</Requirements>
<FormSettings>
<Form xsi:type="ItemRead">
<DesktopSettings>
<SourceLocation DefaultValue="https://outlookplugin.writing-assistant.com/MessageRead.html"/>
<RequestedHeight>250</RequestedHeight>
</DesktopSettings>
</Form>
</FormSettings>
<Permissions>ReadWriteItem</Permissions>
<Rule xsi:type="RuleCollection" Mode="Or">
<Rule xsi:type="ItemIs" ItemType="Message" FormType="ReadOrEdit" />
</Rule>
<DisableEntityHighlighting>false</DisableEntityHighlighting>
<VersionOverrides xmlns="http://schemas.microsoft.com/office/mailappversionoverrides" xsi:type="VersionOverridesV1_0">
<Requirements>
<bt:Sets DefaultMinVersion="1.5">
<bt:Set Name="Mailbox" />
</bt:Sets>
</Requirements>
<Hosts>
<Host xsi:type="MailHost">
<DesktopFormFactor>
<!-- Location of the Functions that UI-less buttons can trigger (ExecuteFunction Actions). -->
<FunctionFile resid="Contoso.FunctionFile.Url" />
<!-- Message Read -->
<ExtensionPoint xsi:type="MessageComposeCommandSurface">
<!-- Use the default tab of the ExtensionPoint or create your own with <CustomTab id="myTab"> -->
<CustomTab id="customTabLabel">
<Group id="msgReadGroup">
<Label resid="groupLabel" />
<!-- Launch the add-in : task pane button -->
<Control xsi:type="Button" id="msgReadOpenPaneButton">
<Label resid="paneReadButtonLabel" />
<Supertip>
<Title resid="paneReadSuperTipTitle" />
<Description resid="paneReadSuperTipDescription" />
</Supertip>
<Icon>
<bt:Image size="16" resid="Contoso.TaskpaneButton.Icon16" />
<bt:Image size="32" resid="Contoso.TaskpaneButton.Icon32" />
<bt:Image size="64" resid="Contoso.TaskpaneButton.Icon64" />
<bt:Image size="80" resid="Contoso.TaskpaneButton.Icon80" />
</Icon>
<Action xsi:type="ShowTaskpane">
<SourceLocation resid="Contoso.Taskpane.Url" />
</Action>
</Control>
</Group>
<Group id="Contoso.Tab1.Group5">
<Label resid="Contoso.Tab1.GroupLabel2" />
<Control xsi:type="Button" id="Contoso.TranslateWord">
<Label resid="Contoso.TranslateWord.Label" />
<Supertip>
<Title resid="Contoso.TranslateWord.Label" />
<Description resid="Contoso.TranslateWord.Tooltip" />
</Supertip>
<Icon>
<bt:Image size="16" resid="Contoso.TranslateWord.Icon16" />
<bt:Image size="32" resid="Contoso.TranslateWord.Icon32" />
<bt:Image size="64" resid="Contoso.TranslateWord.Icon64" />
<bt:Image size="80" resid="Contoso.TranslateWord.Icon80" />
</Icon>
<Action xsi:type="ShowTaskpane">
<SourceLocation resid="Contoso.TranslateWord.Url" />
</Action>
</Control>
<Control xsi:type="Button" id="Contoso.DS">
<Label resid="Contoso.DS.Label" />
<Supertip>
<Title resid="Contoso.DS.Label" />
<Description resid="Contoso.DS.Tooltip" />
</Supertip>
<Icon>
<bt:Image size="16" resid="Contoso.DS.Icon16" />
<bt:Image size="32" resid="Contoso.DS.Icon32" />
<bt:Image size="64" resid="Contoso.DS.Icon64" />
<bt:Image size="80" resid="Contoso.DS.Icon80" />
</Icon>
<Action xsi:type="ShowTaskpane">
<SourceLocation resid="Contoso.DS.Url" />
</Action>
</Control>
</Group>
<Group id="Contoso.Tab1.Group2">
<Label resid="Contoso.Tab1.GroupLabel2" />
<Control xsi:type="Button" id="Contoso.MyDictionary">
<Label resid="Contoso.MyDictionary.Label" />
<Supertip>
<Title resid="Contoso.MyDictionary.Label" />
<Description resid="Contoso.MyDictionary.Tooltip" />
</Supertip>
<Icon>
<bt:Image size="16" resid="Contoso.MyDictionary.Icon16" />
<bt:Image size="32" resid="Contoso.MyDictionary.Icon32" />
<bt:Image size="64" resid="Contoso.MyDictionary.Icon64" />
<bt:Image size="80" resid="Contoso.MyDictionary.Icon80" />
</Icon>
<Action xsi:type="ShowTaskpane">
<SourceLocation resid="Contoso.MyDictionary.Url" />
</Action>
</Control>
<Control xsi:type="Button" id="Contoso.MyStatistics">
<Label resid="Contoso.MyStatistics.Label" />
<Supertip>
<Title resid="Contoso.MyStatistics.Label" />
<Description resid="Contoso.MyStatistics.Tooltip" />
</Supertip>
<Icon>
<bt:Image size="16" resid="Contoso.MyStatistics.Icon16" />
<bt:Image size="32" resid="Contoso.MyStatistics.Icon32" />
<bt:Image size="64" resid="Contoso.MyStatistics.Icon64" />
<bt:Image size="80" resid="Contoso.MyStatistics.Icon80" />
</Icon>
<Action xsi:type="ShowTaskpane">
<SourceLocation resid="Contoso.MyStatistics.Url" />
</Action>
</Control>
<Control xsi:type="Button" id="Contoso.Download">
<Label resid="Contoso.Download.Label" />
<Supertip>
<Title resid="Contoso.Download.Label" />
<Description resid="Contoso.Download.Tooltip" />
</Supertip>
<Icon>
<bt:Image size="16" resid="Contoso.Download.Icon16" />
<bt:Image size="32" resid="Contoso.Download.Icon32" />
<bt:Image size="64" resid="Contoso.Download.Icon64" />
<bt:Image size="80" resid="Contoso.Download.Icon80" />
</Icon>
<Action xsi:type="ExecuteFunction">
<FunctionName>report</FunctionName>
</Action>
</Control>
</Group>
<Group id="Contoso.Tab1.Group4">
<Label resid="Contoso.Tab1.GroupLabel4" />
<Control xsi:type="Button" id="Contoso.setting">
<Label resid="Contoso.setting.Label" />
<Supertip>
<Title resid="Contoso.setting.Label" />
<Description resid="Contoso.setting.Tooltip" />
</Supertip>
<Icon>
<bt:Image size="16" resid="Contoso.setting.Icon16" />
<bt:Image size="32" resid="Contoso.setting.Icon32" />
<bt:Image size="64" resid="Contoso.setting.Icon64" />
<bt:Image size="80" resid="Contoso.setting.Icon80" />
</Icon>
<Action xsi:type="ShowTaskpane">
<SourceLocation resid="Contoso.Taskpane5.Url" />
</Action>
</Control>
<Control xsi:type="Button" id="Contoso.FAQ">
<Label resid="Contoso.FAQ.Label" />
<Supertip>
<Title resid="Contoso.FAQ.Label" />
<Description resid="Contoso.FAQ.Tooltip" />
</Supertip>
<Icon>
<bt:Image size="16" resid="Contoso.FAQ.Icon16" />
<bt:Image size="32" resid="Contoso.FAQ.Icon32" />
<bt:Image size="64" resid="Contoso.FAQ.Icon64" />
<bt:Image size="80" resid="Contoso.FAQ.Icon80" />
</Icon>
<Action xsi:type="ExecuteFunction">
<FunctionName>faq</FunctionName>
</Action>
</Control>
<Control xsi:type="Button" id="Contoso.Tour">
<Label resid="Contoso.Tour.Label" />
<Supertip>
<Title resid="Contoso.Tour.Label" />
<Description resid="Contoso.Tour.Tooltip" />
</Supertip>
<Icon>
<bt:Image size="16" resid="Contoso.Tour.Icon16" />
<bt:Image size="32" resid="Contoso.Tour.Icon32" />
<bt:Image size="64" resid="Contoso.Tour.Icon64" />
<bt:Image size="80" resid="Contoso.Tour.Icon80" />
</Icon>
<Action xsi:type="ExecuteFunction">
<FunctionName>Tour</FunctionName>
</Action>
</Control>
<Control xsi:type="Button" id="Contoso.logout">
<Label resid="Contoso.logout.Label" />
<Supertip>
<Title resid="Contoso.logout.Label" />
<Description resid="Contoso.logout.Tooltip" />
</Supertip>
<Icon>
<bt:Image size="16" resid="Contoso.logout.Icon16" />
<bt:Image size="32" resid="Contoso.logout.Icon32" />
<bt:Image size="64" resid="Contoso.logout.Icon64" />
<bt:Image size="80" resid="Contoso.logout.Icon80" />
</Icon>
<Action xsi:type="ShowTaskpane">
<SourceLocation resid="Contoso.logout.Url" />
</Action>
</Control>
</Group>
<Group id="Contoso.Tab1.Group3">
<Label resid="Contoso.Tab1.GroupLabel3" />
<Control xsi:type="Button" id="Contoso.Check">
<Label resid="Contoso.Check.Label" />
<Supertip>
<Title resid="Contoso.Check.Label" />
<Description resid="Contoso.Check.Tooltip" />
</Supertip>
<Icon>
<bt:Image size="16" resid="Contoso.Check.Icon16" />
<bt:Image size="32" resid="Contoso.Check.Icon32" />
<bt:Image size="64" resid="Contoso.Check.Icon64" />
<bt:Image size="80" resid="Contoso.Check.Icon80" />
</Icon>
<Action xsi:type="ShowTaskpane">
<SourceLocation resid="Contoso.Taskpane3.Url" />
</Action>
</Control>
<Control xsi:type="Button" id="Contoso.Clear">
<Label resid="Contoso.Clear.Label" />
<Supertip>
<Title resid="Contoso.Clear.Label" />
<Description resid="Contoso.Clear.Tooltip" />
</Supertip>
<Icon>
<bt:Image size="16" resid="Contoso.Clear.Icon16" />
<bt:Image size="32" resid="Contoso.Clear.Icon32" />
<bt:Image size="64" resid="Contoso.Clear.Icon64" />
<bt:Image size="80" resid="Contoso.Clear.Icon80" />
</Icon>
<Action xsi:type="ShowTaskpane">
<SourceLocation resid="Contoso.Taskpane4.Url" />
</Action>
</Control>
<Control xsi:type="Button" id="Contoso.Error">
<Label resid="Contoso.ErrorList.Label" />
<Supertip>
<Title resid="Contoso.ErrorList.Label" />
<Description resid="Contoso.ErrorList.Tooltip" />
</Supertip>
<Icon>
<bt:Image size="16" resid="Contoso.ErrList.Icon16" />
<bt:Image size="32" resid="Contoso.ErrList.Icon32" />
<bt:Image size="64" resid="Contoso.ErrList.Icon64" />
<bt:Image size="80" resid="Contoso.ErrList.Icon80" />
</Icon>
<Action xsi:type="ShowTaskpane">
<!--Provide a url resource id for the location that will be displayed on the task pane -->
<SourceLocation resid="Contoso.ErrorList.Url" />
</Action>
</Control>
</Group>
<Label resid="customTabLabel.TabLabel" />
</CustomTab>
</ExtensionPoint>
<!-- Go to http://aka.ms/ExtensionPointsCommands to learn how to add more Extension Points: MessageRead, AppointmentOrganizer, AppointmentAttendee -->
</DesktopFormFactor>
</Host>
</Hosts>
<Resources>
<bt:Images>
<bt:Image id="Contoso.setting.Icon16" DefaultValue="https://outlookplugin.writing-assistant.com/Images/setting-16.png" />
<bt:Image id="Contoso.setting.Icon32" DefaultValue="https://outlookplugin.writing-assistant.com/Images/setting-32.png" />
<bt:Image id="Contoso.setting.Icon64" DefaultValue="https://outlookplugin.writing-assistant.com/Images/setting-64.png" />
<bt:Image id="Contoso.setting.Icon80" DefaultValue="https://outlookplugin.writing-assistant.com/Images/setting-80.png" />
<bt:Image id="Contoso.TaskpaneButton.Icon16" DefaultValue="https://outlookplugin.writing-assistant.com/Images/logo-16.png" />
<bt:Image id="Contoso.TaskpaneButton.Icon32" DefaultValue="https://outlookplugin.writing-assistant.com/Images/logo-32.png" />
<bt:Image id="Contoso.TaskpaneButton.Icon64" DefaultValue="https://outlookplugin.writing-assistant.com/Images/logo-64.png" />
<bt:Image id="Contoso.TaskpaneButton.Icon80" DefaultValue="https://outlookplugin.writing-assistant.com/Images/logo-80.png" />
<bt:Image id="Contoso.Check.Icon16" DefaultValue="https://outlookplugin.writing-assistant.com/Images/check-16.png" />
<bt:Image id="Contoso.Check.Icon32" DefaultValue="https://outlookplugin.writing-assistant.com/Images/check-32.png" />
<bt:Image id="Contoso.Check.Icon64" DefaultValue="https://outlookplugin.writing-assistant.com/Images/check-64.png" />
<bt:Image id="Contoso.Check.Icon80" DefaultValue="https://outlookplugin.writing-assistant.com/Images/check-80.png" />
<bt:Image id="Contoso.MyDictionary.Icon16" DefaultValue="https://outlookplugin.writing-assistant.com/Images/my-dictionary-16.png" />
<bt:Image id="Contoso.MyDictionary.Icon32" DefaultValue="https://outlookplugin.writing-assistant.com/Images/my-dictionary-32.png" />
<bt:Image id="Contoso.MyDictionary.Icon64" DefaultValue="https://outlookplugin.writing-assistant.com/Images/my-dictionary-64.png" />
<bt:Image id="Contoso.Download.Icon80" DefaultValue="https://outlookplugin.writing-assistant.com/Images/download-80.png" />
<bt:Image id="Contoso.TranslateWord.Icon16" DefaultValue="https://outlookplugin.writing-assistant.com/Images/translate-word-16.png" />
<bt:Image id="Contoso.TranslateWord.Icon32" DefaultValue="https://outlookplugin.writing-assistant.com/Images/translate-word-32.png" />
<bt:Image id="Contoso.TranslateWord.Icon64" DefaultValue="https://outlookplugin.writing-assistant.com/Images/translate-word-64.png" />
<bt:Image id="Contoso.TranslateWord.Icon80" DefaultValue="https://outlookplugin.writing-assistant.com/Images/translate-word-80.png" />
<bt:Image id="Contoso.WordDefinition.Icon16" DefaultValue="https://outlookplugin.writing-assistant.com/Images/wd-16.png" />
<bt:Image id="Contoso.WordDefinition.Icon32" DefaultValue="https://outlookplugin.writing-assistant.com/Images/wd-32.png" />
<bt:Image id="Contoso.WordDefinition.Icon64" DefaultValue="https://outlookplugin.writing-assistant.com/Images/wd-64.png" />
<bt:Image id="Contoso.WordDefinition.Icon80" DefaultValue="https://outlookplugin.writing-assistant.com/Images/wd-80.png" />
<bt:Image id="Contoso.Synonyms.Icon16" DefaultValue="https://outlookplugin.writing-assistant.com/Images/synonyms-16.png" />
<bt:Image id="Contoso.Synonyms.Icon32" DefaultValue="https://outlookplugin.writing-assistant.com/Images/synonyms-32.png" />
<bt:Image id="Contoso.Synonyms.Icon64" DefaultValue="https://outlookplugin.writing-assistant.com/Images/synonyms-64.png" />
<bt:Image id="Contoso.Synonyms.Icon80" DefaultValue="https://outlookplugin.writing-assistant.com/Images/synonyms-80.png" />
<bt:Image id="Contoso.Clear.Icon16" DefaultValue="https://outlookplugin.writing-assistant.com/Images/clear-icon-16.png" />
<bt:Image id="Contoso.Clear.Icon32" DefaultValue="https://outlookplugin.writing-assistant.com/Images/clear-icon-32.png" />
<bt:Image id="Contoso.Clear.Icon64" DefaultValue="https://outlookplugin.writing-assistant.com/Images/clear-icon-64.png" />
<bt:Image id="Contoso.Clear.Icon80" DefaultValue="https://outlookplugin.writing-assistant.com/Images/clear-icon-80.png" />
<bt:Image id="Contoso.logout.Icon16" DefaultValue="https://outlookplugin.writing-assistant.com/Images/logout-16.png" />
<bt:Image id="Contoso.logout.Icon32" DefaultValue="https://outlookplugin.writing-assistant.com/Images/logout-32.png" />
<bt:Image id="Contoso.logout.Icon64" DefaultValue="https://outlookplugin.writing-assistant.com/Images/logout-64.png" />
<bt:Image id="Contoso.logout.Icon80" DefaultValue="https://outlookplugin.writing-assistant.com/Images/logout-80.png" />
<bt:Image id="Contoso.ErrList.Icon16" DefaultValue="https://outlookplugin.writing-assistant.com/Images/list-16.png" />
<bt:Image id="Contoso.ErrList.Icon32" DefaultValue="https://outlookplugin.writing-assistant.com/Images/list-32.png" />
<bt:Image id="Contoso.ErrList.Icon64" DefaultValue="https://outlookplugin.writing-assistant.com/Images/list-64.png" />
<bt:Image id="Contoso.ErrList.Icon80" DefaultValue="https://outlookplugin.writing-assistant.com/Images/list-80.png" />
</bt:Images>
<bt:Urls>
<bt:Url id="Contoso.FunctionFile.Url" DefaultValue="https://outlookplugin.writing-assistant.com/Functions/FunctionFile.html"/>
<bt:Url id="Contoso.Taskpane3.Url" DefaultValue="https://outlookplugin.writing-assistant.com/UI/Accordion.html"/>
<bt:Url id="Contoso.Taskpane.Url" DefaultValue="https://outlookplugin.writing-assistant.com/UI/Login.html" />
<bt:Url id="Contoso.Taskpane4.Url" DefaultValue="https://outlookplugin.writing-assistant.com/UI/Clear.html"/>
<bt:Url id="Contoso.TranslateWord.Url" DefaultValue="https://outlookplugin.writing-assistant.com/UI/Translate.html"/>
<bt:Url id="Contoso.WordDefinition.Url" DefaultValue="https://outlookplugin.writing-assistant.com/UI/GetWordDefinition.html"/>
<bt:Url id="Contoso.Synonyms.Url" DefaultValue="https://outlookplugin.writing-assistant.com/UI/Synonym.html"/>
<bt:Url id="Contoso.MyDictionary.Url" DefaultValue="https://outlookplugin.writing-assistant.com/UI/GetMyDictionary.html"/>
<bt:Url id="Contoso.MyStatistics.Url" DefaultValue="https://outlookplugin.writing-assistant.com/UI/Statistics.html"/>
<bt:Url id="Contoso.Download.Url" DefaultValue="https://outlookplugin.writing-assistant.com/UI/Download.html"/>
<bt:Url id="Contoso.DS.Url" DefaultValue="https://outlookplugin.writing-assistant.com/UI/DefinitionandSynonyms.html"/>
<bt:Url id="Contoso.FAQ.Url" DefaultValue="https://outlookplugin.writing-assistant.com/UI/Login.html"/>
<bt:Url id="Contoso.Tour.Url" DefaultValue="https://outlookplugin.writing-assistant.com/UI/Login.html"/>
<bt:Url id="Contoso.ErrorList.Url" DefaultValue="https://outlookplugin.writing-assistant.com/UI/ErrorList.html"/>
<bt:Url id="Contoso.Taskpane5.Url" DefaultValue="https://outlookplugin.writing-assistant.com/UI/Setting.html"/>
<bt:Url id="Contoso.logout.Url" DefaultValue="https://outlookplugin.writing-assistant.com/UI/Logout.html"/>
</bt:Urls>
<bt:ShortStrings>
<bt:String id="groupLabel" DefaultValue=" "/>
<bt:String id="customTabLabel" DefaultValue="My Add-in Tab"/>
<bt:String id="paneReadButtonLabel" DefaultValue="WritingAssistant"/>
<bt:String id="paneReadSuperTipTitle" DefaultValue="Get all properties"/>
<bt:String id="customTabLabel.TabLabel" DefaultValue="WritingAssistant" />
<bt:String id="Contoso.Check.Label" DefaultValue="Check" />
<bt:String id="Contoso.TranslateWord.Label" DefaultValue="Translate" />
<bt:String id="Contoso.WordDefinition.Label" DefaultValue="Word Definition" />
<bt:String id="Contoso.Synonyms.Label" DefaultValue="Synonyms" />
<bt:String id="Contoso.MyDictionary.Label" DefaultValue="My Dictionary" />
<bt:String id="Contoso.MyStatistics.Label" DefaultValue="Statistics" />
<bt:String id="Contoso.Download.Label" DefaultValue="Download Report" />
<bt:String id="Contoso.DS.Label" DefaultValue="Word Definition" />
<bt:String id="Contoso.FAQ.Label" DefaultValue="FAQs" />
<bt:String id="Contoso.Tour.Label" DefaultValue="Tour" />
<bt:String id="Contoso.Tab1.GroupLabel2" DefaultValue=" " />
<bt:String id="Contoso.TaskpaneButton.Label2" DefaultValue="Check" />
<bt:String id="Contoso.TranslateWord.Label2" DefaultValue="Translate" />
<bt:String id="Contoso.WordDefinition.Label2" DefaultValue="Word Definition" />
<bt:String id="Contoso.Synonyms.Label2" DefaultValue="Synonyms" />
<bt:String id="Contoso.MyDictionary.Label2" DefaultValue="Open My Dictionary" />
<bt:String id="Contoso.MyStatistics.Label2" DefaultValue="Statistics" />
<bt:String id="Contoso.Download.Label2" DefaultValue="Download Report" />
<bt:String id="Contoso.DS.Label2" DefaultValue="DS" />
<bt:String id="Contoso.FAQ.Label2" DefaultValue="Open FAQ" />
<bt:String id="Contoso.Tour.Label2" DefaultValue="Tour" />
<bt:String id="Contoso.Clear.Label" DefaultValue="Clear Highlights" />
<bt:String id="Contoso.Tab1.GroupLabel3" DefaultValue=" " />
<bt:String id="Contoso.logout.Label" DefaultValue="Logout" />
<bt:String id="Contoso.setting.Label" DefaultValue="Settings" />
<bt:String id="Contoso.Tab1.logout" DefaultValue=" " />
<bt:String id="Contoso.Tab1.GroupLabel4" DefaultValue=" " />
<bt:String id="Contoso.ErrorList.Label" DefaultValue="Error List" />
</bt:ShortStrings>
<bt:LongStrings>
<bt:String id="paneReadSuperTipDescription" DefaultValue="Open WritingAssistant for a comprehensive analysis of your writing."/>
<bt:String id="Contoso.Check.Tooltip" DefaultValue="Check your writing for grammatical errors." />
<bt:String id="Contoso.TranslateWord.Tooltip" DefaultValue="Translating English to German? Or Hindi to Urdu? The Translate tool has got it covered. Simply enter a word, select a language of your choice, and get started. " />
<bt:String id="Contoso.WordDefinition.Tooltip" DefaultValue="Having trouble with a certain word? Type it in the dictionary search bar for the exact meaning and a short description." />
<bt:String id="Contoso.Synonyms.Tooltip" DefaultValue="Running out of words? Allow us to suggest more options to express the same idea in different words." />
<bt:String id="Contoso.MyDictionary.Tooltip" DefaultValue="A modifiable collection of your most frequently used words" />
<bt:String id="Contoso.MyStatistics.Tooltip" DefaultValue="View a summary of your performance in each category: Mechanics, Grammar, Content Quality, and Vocabulary." />
<bt:String id="Contoso.Download.Tooltip" DefaultValue="Click to download Report" />
<bt:String id="Contoso.DS.Tooltip" DefaultValue="Running out of words? Allow us to suggest more options to express the same idea in different words." />
<bt:String id="Contoso.FAQ.Tooltip" DefaultValue="Have questions about WritingAssistant? We are happy to help." />
<bt:String id="Contoso.Tour.Tooltip" DefaultValue="Buckle up for a tour of WritingAssistant." />
<bt:String id="Contoso.Clear.Tooltip" DefaultValue="Clear the current errors from your text and the list." />
<bt:String id="Contoso.logout.Tooltip" DefaultValue="Log out of WritingAssistant and return to the home page." />
<bt:String id="Contoso.setting.Tooltip" DefaultValue="Customise error subcategories for an experience tailored to your needs." />
<bt:String id="Contoso.ErrorList.Tooltip" DefaultValue="Click to get Error list " />
</bt:LongStrings>
</Resources>
</VersionOverrides>
</OfficeApp>
I don't understand what is needed to change here, as I 'm a beginner

The manifest provided has several mistakes, probably just inattention to copy&paste inside Resources section. The following Images were missing ...
<bt:Image id="Contoso.Tour.Icon16" DefaultValue="https://outlookplugin.writing-assistant.com/Images/setting-16.png" />
<bt:Image id="Contoso.Tour.Icon32" DefaultValue="https://outlookplugin.writing-assistant.com/Images/setting-32.png" />
<bt:Image id="Contoso.Tour.Icon64" DefaultValue="https://outlookplugin.writing-assistant.com/Images/setting-64.png" />
<bt:Image id="Contoso.Tour.Icon80" DefaultValue="https://outlookplugin.writing-assistant.com/Images/setting-80.png" />
<bt:Image id="Contoso.FAQ.Icon16" DefaultValue="https://outlookplugin.writing-assistant.com/Images/setting-16.png" />
<bt:Image id="Contoso.FAQ.Icon32" DefaultValue="https://outlookplugin.writing-assistant.com/Images/setting-32.png" />
<bt:Image id="Contoso.FAQ.Icon64" DefaultValue="https://outlookplugin.writing-assistant.com/Images/setting-64.png" />
<bt:Image id="Contoso.FAQ.Icon80" DefaultValue="https://outlookplugin.writing-assistant.com/Images/setting-80.png" />
<bt:Image id="Contoso.DS.Icon16" DefaultValue="https://outlookplugin.writing-assistant.com/Images/setting-16.png" />
<bt:Image id="Contoso.DS.Icon32" DefaultValue="https://outlookplugin.writing-assistant.com/Images/setting-32.png" />
<bt:Image id="Contoso.DS.Icon64" DefaultValue="https://outlookplugin.writing-assistant.com/Images/setting-64.png" />
<bt:Image id="Contoso.DS.Icon80" DefaultValue="https://outlookplugin.writing-assistant.com/Images/setting-80.png" />
<bt:Image id="Contoso.MyStatistics.Icon16" DefaultValue="https://outlookplugin.writing-assistant.com/Images/setting-16.png" />
<bt:Image id="Contoso.MyStatistics.Icon32" DefaultValue="https://outlookplugin.writing-assistant.com/Images/setting-32.png" />
<bt:Image id="Contoso.MyStatistics.Icon64" DefaultValue="https://outlookplugin.writing-assistant.com/Images/setting-64.png" />
<bt:Image id="Contoso.MyStatistics.Icon80" DefaultValue="https://outlookplugin.writing-assistant.com/Images/setting-80.png" />
<bt:Image id="Contoso.MyDictionary.Icon80" DefaultValue="https://outlookplugin.writing-assistant.com/Images/my-dictionary-80.png" />
<bt:Image id="Contoso.Download.Icon16" DefaultValue="https://outlookplugin.writing-assistant.com/Images/download-16.png" />
<bt:Image id="Contoso.Download.Icon32" DefaultValue="https://outlookplugin.writing-assistant.com/Images/download-32.png" />
<bt:Image id="Contoso.Download.Icon64" DefaultValue="https://outlookplugin.writing-assistant.com/Images/download-64.png" />
As long as I added those missing entries the add-in was loaded (obviosly you would need to change the icons for those missing IDs) ...

Outlook Add-In Icon Not Showing

For some reason, when I load the manifest file into Outlook, the default icon is displaying for my Outlook add-in. The add-in is being hosted internally at our organization—would that cause this issue?
Below I have selected the pertinent sections of my manifest file. Please let me know if any other information is needed. Any help would be appreciated.
Manifest hosts:
<Hosts>
<Host xsi:type="MailHost">
<DesktopFormFactor>
<ExtensionPoint xsi:type="AppointmentOrganizerCommandSurface">
<OfficeTab id="TabDefault">
<Group id="msgReadGroup">
<Label resid="groupLabel" />
<Control xsi:type="Button" id="msgReadOpenPaneButton">
<Label resid="paneAppointmentButtonLabel" />
<Supertip>
<Title resid="paneCreateAptSuperTipTitle" />
<Description resid="paneCreateAptTipDescription" />
</Supertip>
<Icon>
<bt:Image size="16" resid="icon16" />
<bt:Image size="32" resid="icon32" />
<bt:Image size="80" resid="icon80" />
</Icon>
<Action xsi:type="ShowTaskpane">
<SourceLocation resid="appointmentCreatePaneURL" />
</Action>
</Control>
</Group>
</OfficeTab>
</ExtensionPoint>
</DesktopFormFactor>
</Host>
</Hosts>
Manifest resources:
<Resources>
...
<bt:Images>
<bt:Image id="icon16" DefaultValue="https://intranet-domain.com/assets/icon-16.png" />
<bt:Image id="icon32" DefaultValue="https://intranet-domain.com/assets/icon-32.png" />
<bt:Image id="icon80" DefaultValue="https://intranet-domain.com/assets/icon-80.png" />
</bt:Images>
...
</Resources>

Outlook Add-in not rendering in 2016

I am creating an Outlook Add-in, which works perfectly fine in Outlook 2013. In Outlook 2016, however, nothing shows up. The ribbon items are completely gone. In 2013, there are three ribbon buttons that show up, that do not in 2016.
Any ideas what might be wrong in the manifest file.
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<OfficeApp
xmlns="http://schemas.microsoft.com/office/appforoffice/1.1"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:bt="http://schemas.microsoft.com/office/officeappbasictypes/1.0"
xmlns:mailappor="http://schemas.microsoft.com/office/mailappversionoverrides"
xsi:type="MailApp">
<Id>3a2be270-ea2f-407c-97f1-138f67352cb4</Id>
<Version>1.1.9</Version>
<ProviderName>--REMOVED--</ProviderName>
<DefaultLocale>en-US</DefaultLocale>
<DisplayName DefaultValue="--REMOVED-- for PS"/>
<Description DefaultValue="[Outlook Add-in description]"/>
<IconUrl DefaultValue="https://localhost/--REMOVED--PS/outlook/images/icon-32.png"/>
<HighResolutionIconUrl DefaultValue="https://localhost/--REMOVED--PS/outlook/images/icon-80.png"/>
<SupportUrl DefaultValue="https://help.--REMOVED--.com/Product/--REMOVED--PS/"/>
<Hosts>
<Host Name="Mailbox"/>
</Hosts>
<Requirements>
<Sets>
<Set Name="MailBox" MinVersion="1.1"/>
</Sets>
</Requirements>
<FormSettings>
<Form xsi:type="ItemRead">
<DesktopSettings>
<SourceLocation DefaultValue="https://localhost/--REMOVED--PS/outlook/appread/home/home.html"/>
<RequestedHeight>250</RequestedHeight>
</DesktopSettings>
</Form>
</FormSettings>
<Permissions>ReadItem</Permissions>
<Rule xsi:type="RuleCollection" Mode="Or">
<Rule xsi:type="ItemIs" ItemType="Message" FormType="Read"/>
</Rule>
<DisableEntityHighlighting>false</DisableEntityHighlighting>
<VersionOverrides xmlns="http://schemas.microsoft.com/office/mailappversionoverrides" xsi:type="VersionOverridesV1_0">
<Hosts>
<Host xsi:type="MailHost">
<DesktopFormFactor>
<FunctionFile resid="funcFile"/>
<ExtensionPoint xsi:type="MessageReadCommandSurface">
<OfficeTab id="TabDefault">
<Group id="msgReadCmdGroup">
<Label resid="groupLabel"/>
<Control xsi:type="Button" id="msgReadPaneButton">
<Label resid="msgReadPaneButtonLabel"/>
<Supertip>
<Title resid="msgReadPaneButtonTitle"/>
<Description resid="msgReadPaneButtonDesc"/>
</Supertip>
<Icon>
<bt:Image size="16" resid="--REMOVED---16"/>
<bt:Image size="32" resid="--REMOVED---32"/>
<bt:Image size="80" resid="--REMOVED---80"/>
</Icon>
<Action xsi:type="ShowTaskpane">
<SourceLocation resid="readPaneUrl"/>
</Action>
</Control>
<Control xsi:type="Menu" id="msgCreateMenu">
<Label resid="menuCreateLabel"/>
<Supertip>
<Title resid="menuCreateTitle"/>
<Description resid="menuCreateDescription"/>
</Supertip>
<Icon>
<bt:Image size="16" resid="new-16"/>
<bt:Image size="32" resid="new-32"/>
<bt:Image size="80" resid="new-80"/>
</Icon>
<Items>
<Item id="msgCreateContact">
<Label resid="createContactLabel"/>
<Supertip>
<Title resid="createContactTitle"/>
<Description resid="createContactDesc"/>
</Supertip>
<Icon>
<bt:Image size="16" resid="contact-16"/>
<bt:Image size="32" resid="contact-32"/>
<bt:Image size="80" resid="contact-80"/>
</Icon>
<Action xsi:type="ExecuteFunction">
<FunctionName>createContact</FunctionName>
</Action>
</Item>
<Item id="msgCreateFirm">
<Label resid="createFirmLabel"/>
<Supertip>
<Title resid="createFirmTitle"/>
<Description resid="createFirmDesc"/>
</Supertip>
<Icon>
<bt:Image size="16" resid="firm-16"/>
<bt:Image size="32" resid="firm-32"/>
<bt:Image size="80" resid="firm-80"/>
</Icon>
<Action xsi:type="ExecuteFunction">
<FunctionName>createFirm</FunctionName>
</Action>
</Item>
<Item id="msgCreateOpportunity">
<Label resid="createOpportunityLabel"/>
<Supertip>
<Title resid="createOpportunityTitle"/>
<Description resid="createOpportunityDesc"/>
</Supertip>
<Icon>
<bt:Image size="16" resid="opportunity-16"/>
<bt:Image size="32" resid="opportunity-32"/>
<bt:Image size="80" resid="opportunity-80"/>
</Icon>
<Action xsi:type="ExecuteFunction">
<FunctionName>createOpportunity</FunctionName>
</Action>
</Item>
<Item id="msgCreateActivity">
<Label resid="createActivityLabel"/>
<Supertip>
<Title resid="createActivityTitle"/>
<Description resid="createActivityDesc"/>
</Supertip>
<Icon>
<bt:Image size="16" resid="activity-16"/>
<bt:Image size="32" resid="activity-32"/>
<bt:Image size="80" resid="activity-80"/>
</Icon>
<Action xsi:type="ExecuteFunction">
<FunctionName>createActivity</FunctionName>
</Action>
</Item>
</Items>
</Control>
<Control xsi:type="Menu" id="msgSetttingHelpMenu">
<Label resid="menuSettingsHelpLabel"/>
<Supertip>
<Title resid="menuSettingsHelpTitle"/>
<Description resid="menuSettingsHelpDescription"/>
</Supertip>
<Icon>
<bt:Image size="16" resid="settings-16"/>
<bt:Image size="32" resid="settings-32"/>
<bt:Image size="80" resid="settings-80"/>
</Icon>
<Items>
<Item id="msgCheckAccountInformation">
<Label resid="checkAccountInformationLabel"/>
<Supertip>
<Title resid="checkAccountInformationTitle"/>
<Description resid="checkAccountInformationDesc"/>
</Supertip>
<Action xsi:type="ShowTaskpane">
<SourceLocation resid="settingsPaneUrl"/>
</Action>
</Item>
<Item id="msgCheckHelp">
<Label resid="checkHelpLabel"/>
<Supertip>
<Title resid="checkHelpTitle"/>
<Description resid="checkHelpDesc"/>
</Supertip>
<Action xsi:type="ExecuteFunction">
<FunctionName>checkHelp</FunctionName>
</Action>
</Item>
</Items>
</Control>
</Group>
</OfficeTab>
</ExtensionPoint>
</DesktopFormFactor>
</Host>
</Hosts>
<Resources>
<bt:Images>
<bt:Image id="--REMOVED---16" DefaultValue="https://localhost/--REMOVED--PS/outlook/images/--REMOVED---16.png"/>
<bt:Image id="--REMOVED---32" DefaultValue="https://localhost/--REMOVED--PS/outlook/images/--REMOVED---32.png"/>
<bt:Image id="--REMOVED---80" DefaultValue="https://localhost/--REMOVED--PS/outlook/images/--REMOVED---80.png"/>
<bt:Image id="new-16" DefaultValue="https://localhost/--REMOVED--PS/outlook/images/new-16.png"/>
<bt:Image id="new-32" DefaultValue="https://localhost/--REMOVED--PS/outlook/images/new-32.png"/>
<bt:Image id="new-80" DefaultValue="https://localhost/--REMOVED--PS/outlook/images/new-80.png"/>
<bt:Image id="settings-16" DefaultValue="https://localhost/--REMOVED--PS/outlook/images/settings-16.png"/>
<bt:Image id="settings-32" DefaultValue="https://localhost/--REMOVED--PS/outlook/images/settings-32.png"/>
<bt:Image id="settings-80" DefaultValue="https://localhost/--REMOVED--PS/outlook/images/settings-80.png"/>
<bt:Image id="activity-16" DefaultValue="https://localhost/--REMOVED--PS/outlook/images/activity-16.png"/>
<bt:Image id="activity-32" DefaultValue="https://localhost/--REMOVED--PS/outlook/images/activity-32.png"/>
<bt:Image id="activity-80" DefaultValue="https://localhost/--REMOVED--PS/outlook/images/activity-80.png"/>
<bt:Image id="contact-16" DefaultValue="https://localhost/--REMOVED--PS/outlook/images/contact-16.png"/>
<bt:Image id="contact-32" DefaultValue="https://localhost/--REMOVED--PS/outlook/images/contact-32.png"/>
<bt:Image id="contact-80" DefaultValue="https://localhost/--REMOVED--PS/outlook/images/contact-80.png"/>
<bt:Image id="firm-16" DefaultValue="https://localhost/--REMOVED--PS/outlook/images/firms-16.png"/>
<bt:Image id="firm-32" DefaultValue="https://localhost/--REMOVED--PS/outlook/images/firms-32.png"/>
<bt:Image id="firm-80" DefaultValue="https://localhost/--REMOVED--PS/outlook/images/firms-80.png"/>
<bt:Image id="opportunity-16" DefaultValue="https://localhost/--REMOVED--PS/outlook/images/opportunity-16.png"/>
<bt:Image id="opportunity-32" DefaultValue="https://localhost/--REMOVED--PS/outlook/images/opportunity-32.png"/>
<bt:Image id="opportunity-80" DefaultValue="https://localhost/--REMOVED--PS/outlook/images/opportunity-80.png"/>
</bt:Images>
<bt:Urls>
<bt:Url id="funcFile" DefaultValue="https://localhost/--REMOVED--PS/outlook/appread/home/Functions.html"/>
<bt:Url id="readPaneUrl" DefaultValue="https://localhost/--REMOVED--PS/outlook/appread/home/home.html"/>
<bt:Url id="settingsPaneUrl" DefaultValue="https://localhost/--REMOVED--PS/outlook/appread/home/home.html?pane=Settings"/>
</bt:Urls>
<bt:ShortStrings>
<bt:String id="groupLabel" DefaultValue="--REMOVED--"/>
<bt:String id="msgReadPaneButtonLabel" DefaultValue="Open --REMOVED--"/>
<bt:String id="menuCreateLabel" DefaultValue="Create New"/>
<bt:String id="menuSettingsHelpLabel" DefaultValue="Settings and Help"/>
<bt:String id="createContactLabel" DefaultValue="Contact"/>
<bt:String id="createFirmLabel" DefaultValue="Firm"/>
<bt:String id="createOpportunityLabel" DefaultValue="Opportunity"/>
<bt:String id="createActivityLabel" DefaultValue="Activity"/>
<bt:String id="checkAccountInformationLabel" DefaultValue="Account Information"/>
<bt:String id="checkHelpLabel" DefaultValue="Help"/>
<bt:String id="msgReadPaneButtonTitle" DefaultValue="--REMOVED--"/>
<bt:String id="menuCreateTitle" DefaultValue="Create New"/>
<bt:String id="createOpportunityTitle" DefaultValue="Create New Opportunity"/>
<bt:String id="checkHelpTitle" DefaultValue="Help"/>
<bt:String id="checkAccountInformationTitle" DefaultValue="Account Information"/>
<bt:String id="createActivityTitle" DefaultValue="Create New Activity"/>
<bt:String id="createFirmTitle" DefaultValue="Create New Firm"/>
<bt:String id="menuSettingsHelpTitle" DefaultValue="Settings and Help"/>
<bt:String id="createContactTitle" DefaultValue="Create New Contact"/>
</bt:ShortStrings>
<bt:LongStrings>
<bt:String id="msgReadPaneButtonDesc" DefaultValue="Opens a task pane showing information about the contacts"/>
<bt:String id="checkAccountInformationDesc" DefaultValue="Update your account information for --REMOVED-- for Professional Services"/>
<bt:String id="createContactDesc" DefaultValue="Open --REMOVED-- for Professional Services to create a new Contact"/>
<bt:String id="createFirmDesc" DefaultValue="Open --REMOVED-- for Professional Services to create a new Firm"/>
<bt:String id="createOpportunityDesc" DefaultValue="Open --REMOVED-- for Professional Services to create a new Opportunity"/>
<bt:String id="createActivityDesc" DefaultValue="Open --REMOVED-- for Professional Services to create a new Activity"/>
<bt:String id="checkHelpDesc" DefaultValue="Open --REMOVED-- for Professional Services to check the help interface"/>
<bt:String id="menuCreateDescription" DefaultValue="Create a new Contact, Firm, Opportunity or Activity in --REMOVED-- for Professional Services."/>
<bt:String id="menuSettingsHelpDescription" DefaultValue="Update your account information or access help."/>
</bt:LongStrings>
</Resources>
<VersionOverrides xmlns="http://schemas.microsoft.com/office/mailappversionoverrides/1.1" xsi:type="VersionOverridesV1_1">
<Hosts>
<Host xsi:type="MailHost">
<DesktopFormFactor>
<FunctionFile resid="funcFile"/>
<ExtensionPoint xsi:type="MessageReadCommandSurface">
<OfficeTab id="TabDefault">
<Group id="msgReadCmdGroup">
<Label resid="groupLabel"/>
<Control xsi:type="Button" id="msgReadPaneButton">
<Label resid="msgReadPaneButtonLabel"/>
<Supertip>
<Title resid="msgReadPaneButtonTitle"/>
<Description resid="msgReadPaneButtonDesc"/>
</Supertip>
<Icon>
<bt:Image size="16" resid="--REMOVED---16"/>
<bt:Image size="32" resid="--REMOVED---32"/>
<bt:Image size="80" resid="--REMOVED---80"/>
</Icon>
<Action xsi:type="ShowTaskpane">
<SourceLocation resid="readPaneUrl"/>
<SupportsPinning>true</SupportsPinning>
</Action>
</Control>
<Control xsi:type="Menu" id="msgCreateMenu">
<Label resid="menuCreateLabel"/>
<Supertip>
<Title resid="menuCreateTitle"/>
<Description resid="menuCreateDescription"/>
</Supertip>
<Icon>
<bt:Image size="16" resid="new-16"/>
<bt:Image size="32" resid="new-32"/>
<bt:Image size="80" resid="new-80"/>
</Icon>
<Items>
<Item id="msgCreateContact">
<Label resid="createContactLabel"/>
<Supertip>
<Title resid="createContactTitle"/>
<Description resid="createContactDesc"/>
</Supertip>
<Icon>
<bt:Image size="16" resid="contact-16"/>
<bt:Image size="32" resid="contact-32"/>
<bt:Image size="80" resid="contact-80"/>
</Icon>
<Action xsi:type="ExecuteFunction">
<FunctionName>createContact</FunctionName>
</Action>
</Item>
<Item id="msgCreateFirm">
<Label resid="createFirmLabel"/>
<Supertip>
<Title resid="createFirmTitle"/>
<Description resid="createFirmDesc"/>
</Supertip>
<Icon>
<bt:Image size="16" resid="firm-16"/>
<bt:Image size="32" resid="firm-32"/>
<bt:Image size="80" resid="firm-80"/>
</Icon>
<Action xsi:type="ExecuteFunction">
<FunctionName>createFirm</FunctionName>
</Action>
</Item>
<Item id="msgCreateOpportunity">
<Label resid="createOpportunityLabel"/>
<Supertip>
<Title resid="createOpportunityTitle"/>
<Description resid="createOpportunityDesc"/>
</Supertip>
<Icon>
<bt:Image size="16" resid="opportunity-16"/>
<bt:Image size="32" resid="opportunity-32"/>
<bt:Image size="80" resid="opportunity-80"/>
</Icon>
<Action xsi:type="ExecuteFunction">
<FunctionName>createOpportunity</FunctionName>
</Action>
</Item>
<Item id="msgCreateActivity">
<Label resid="createActivityLabel"/>
<Supertip>
<Title resid="createActivityTitle"/>
<Description resid="createActivityDesc"/>
</Supertip>
<Icon>
<bt:Image size="16" resid="activity-16"/>
<bt:Image size="32" resid="activity-32"/>
<bt:Image size="80" resid="activity-80"/>
</Icon>
<Action xsi:type="ExecuteFunction">
<FunctionName>createActivity</FunctionName>
</Action>
</Item>
</Items>
</Control>
<Control xsi:type="Menu" id="msgSetttingHelpMenu">
<Label resid="menuSettingsHelpLabel"/>
<Supertip>
<Title resid="menuSettingsHelpTitle"/>
<Description resid="menuSettingsHelpDescription"/>
</Supertip>
<Icon>
<bt:Image size="16" resid="settings-16"/>
<bt:Image size="32" resid="settings-32"/>
<bt:Image size="80" resid="settings-80"/>
</Icon>
<Items>
<Item id="msgCheckAccountInformation">
<Label resid="checkAccountInformationLabel"/>
<Supertip>
<Title resid="checkAccountInformationTitle"/>
<Description resid="checkAccountInformationDesc"/>
</Supertip>
<Action xsi:type="ShowTaskpane">
<SourceLocation resid="settingsPaneUrl"/>
<SupportsPinning>true</SupportsPinning>
</Action>
</Item>
<Item id="msgCheckHelp">
<Label resid="checkHelpLabel"/>
<Supertip>
<Title resid="checkHelpTitle"/>
<Description resid="checkHelpDesc"/>
</Supertip>
<Action xsi:type="ExecuteFunction">
<FunctionName>checkHelp</FunctionName>
</Action>
</Item>
</Items>
</Control>
</Group>
</OfficeTab>
</ExtensionPoint>
</DesktopFormFactor>
</Host>
</Hosts>
</VersionOverrides>
</VersionOverrides>
</OfficeApp>

Inside the <Supertip> tag there are <Title> and <Description>. The <Title> resource must be placed into <bt:ShortStrings> parent tag. In the same time the <Description> resource must be placed into <bt:LongStrings> parent tag.
Documentation on Office Add-ins XML manifest stated the following:
Title: Required. The text for the supertip. The resid attribute must be set to the value of the id attribute of a String element. The String element is a child element of the ShortStrings element, which is a child element of the Resources element.
Description: Required. The description for the supertip. The resid attribute must be set to the value of the id attribute of a String element. The String element is a child element of the LongStrings element, which is a child element of the Resources element.
To fix your manifest I have moved the following Resource Ids into <bt:ShortStrings> ...
<bt:ShortStrings>
<bt:String id="groupLabel" DefaultValue="--REMOVED--"/>
<bt:String id="msgReadPaneButtonLabel" DefaultValue="Open --REMOVED--"/>
<bt:String id="menuCreateLabel" DefaultValue="Create New"/>
<bt:String id="menuSettingsHelpLabel" DefaultValue="Settings and Help"/>
<bt:String id="createContactLabel" DefaultValue="Contact"/>
<bt:String id="createFirmLabel" DefaultValue="Firm"/>
<bt:String id="createOpportunityLabel" DefaultValue="Opportunity"/>
<bt:String id="createActivityLabel" DefaultValue="Activity"/>
<bt:String id="checkAccountInformationLabel" DefaultValue="Account Information"/>
<bt:String id="checkHelpLabel" DefaultValue="Help"/>
<bt:String id="msgReadPaneButtonTitle" DefaultValue="--REMOVED--"/>
<bt:String id="menuCreateTitle" DefaultValue="Create New"/>
<bt:String id="createOpportunityTitle" DefaultValue="Create New Opportunity"/>
<bt:String id="checkHelpTitle" DefaultValue="Help"/>
<bt:String id="checkAccountInformationTitle" DefaultValue="Account Information"/>
<bt:String id="createActivityTitle" DefaultValue="Create New Activity"/>
<bt:String id="createFirmTitle" DefaultValue="Create New Firm"/>
<bt:String id="menuSettingsHelpTitle" DefaultValue="Settings and Help"/>
<bt:String id="createContactTitle" DefaultValue="Create New Contact"/>
</bt:ShortStrings>
EDIT:
This is become "remote debugging" instead of QandA, but I already done it anyway. After take a closer look on your manifest and replacing all image entries with my own I realize you are missing entire <Resources> section in your <VersionOverrides> element. You must have this tag inside VersionOverrides element. As long as I added the section the add-in appeared in Outlook Desktop. Please note, the resource strings in VersionOverrides element will override the same strings in the parent element.

Resources