I am trying to install the SSIS code check Extension from VS 2017
I am Getting error as
Prerequisites Missing :
Identifier : Microsoft.Net.Component.4.5.1.TargetingPack
Name : .NET Framework 4.5.1 targeting pack
Version : [16.0.28517.75,17.0)
I have tried to install the 4.5.1 framework alone, still same error.
Please suggest if you have come across this error or any alternative extension that we can use for the same.
Based on the official documentation:
A targeting pack lets your app target a specific version of .NET Framework when developing in Visual Studio and some other development environments. A developer pack includes a specific version of .NET Framework and its accompanying SDK along with its corresponding targeting pack.
To download the Microsoft .NET Framework developer pack, you can refer to the following page:
Download .NET Framework 4.5.1
Related
What can be the reason that install is greyed out?
Microsoft Istaller projects 2022 is installed. Solution can build without problems.
It's an old project where .net Framework 4.0 is used.
I'm just guessing, but it might be that .NET Framework 4.0 is deprecated and support was removed. You can't even install it via the Visual Studio Installer's Individual Components. The lowest 4.x targeting pack version I could install is 4.6.
Try installing the latest .NET Framework targeting pack and then re-target the project to use that.
I have downloaded and installed .NET Core 5.0 SDK (v5.0.100-preview.1) in my Visual Studio 2019.
But it is not available in Target framework.
Am I missing something?
You need to install the latest preview of Visual Studio 2019 16.8, refer to
https://devblogs.microsoft.com/aspnet/asp-net-core-updates-in-net-5-preview-1/
You also need to explicitly enable preview versions within Visual Studio itself:
Then you should see it:
Specs: VS Version 16.8.0
Target Version of .Net Core: 5.0
You must have version 16.8.0 in order to have .Net Core 5.0
If you still have problems with Visual Studio not showing .Net Core 5.0 in Visual Studio version 16.8.0 (and assuming you downloaded the .NET Core 5.0 SDK for Visual Studio), well, apparently (and correct me if I'm wrong) it is now called just .Net 5.0, omitting the Core.
After selecting .NET 5.0, I was able to install other libraries which are currently version 5.0+ and dependent on .NET Core 5.0+
Is the new name intentional? Anyways, here some evidence of this working (I was able to install the newest version of Newtonsoft and Entity Framework for .Net Core):
Funny enough, when I try to create a new .Net Core project, the version shows up as expected:
I upgraded my version of Visual studio from 16.7.x to 16.8.1. I expected NET 5 to be listed as a target framework, but it was not.
I had previously created projects in 16.8 preview 6 using RC1.
Visual Studio Install did not list .NET 5 as an individual component either. I then downloaded and installed the x64 SDK. Still no luck. .NET5 was still missing as a target framework for VS 16.8.x
Today I opened VS Installer and from the More dropdown menu selected Repair . The repair process took 25-30 minutes to run, but now .NET Core 3.1 and .NET 5 are listed in all the usual places.
Norm
Maybe a bit late to the party.
Please note that if you've selected a 'regular' .NET Framework application you won't see the .NET 5.0 Framework option.
This is only visible in .NET Core project styles.
Try to set it in your .csproj file. Right click (maybe unload) and edit (within a PropertyGroup-element):
<TargetFramework>net5.0</TargetFramework>
Targeting .NET 5 (rc2) doesn't work smoothly in VS Version 16.8.0 Preview 6.0
I could only target .NET 5 by manually changing the .csproj file, and adding:
<TargetFramework>net5.0</TargetFramework>
When I wanted to create a solution, .NET 5 was not available, even when I have it installed. What I did to fix this was:
When you are creating the project, select the last version (in my case .NET Core 3.1)
When the project is created, right click on the project and select the Properties option.
In the Application tab, select the Target Framework you want.
I'm trying to install a Nuget package that targets .NetStandard 2.0 (Microsoft.Extensions.Logging.Abstractions) into a Net 4.6.1 project in Visual Studio 2015. However, while Frameworks should be compatible, it doesn't quite work:
Install-Package : Could not install package 'Microsoft.Extensions.Logging.Abstractions 2.0.0'. You are trying to
install this package into a project that targets '.NETFramework,Version=v4.6.1', but the package does not contain
any assembly references or content files that are compatible with that framework. For more information, contact
the package author.
At line:1 char:1
+ Install-Package Microsoft.Extensions.Logging.Abstractions
I've followed the steps outlined here: Entity Framework Core 2.0 on .NET 4.6.1
So I have installed package "NETStandard.Library.NETFramework", and added
<PropertyGroup>
<PackageTargetFallback>netstandard2.0</PackageTargetFallback>
</PropertyGroup>
to the csproj. But, no luck there - still the same issue.
Is there any way to install a NetStandard 2.0 package into my project (without upgrading VS or installing any Net Core targeting packs or such)?
Thanks
Referencing .NET Standard 2.0 packages is supported using the following:
NuGet 3.6.0 or higher for VS 2015 (from NuGet's download site - may not yet be listed as recommended latest)
Install the ".NET Standard Support for Visual Studio 2015" from https://aka.ms/netstandard-build-support-netfx (NuGet in VS will also print a link to this in its output window).
There are a still few bugs when consuming .NET Standard 2.0 libraries, especially when mixing .NET Standard < 2.0 and 2.0 libraries but these updates give basic support.
Is there any way to install a NetStandard 2.0 package into my project (without upgrading VS or installing any Net Core targeting packs or such)?
I am afraid not. Just like Jon pointed out that the reason for that issue is that you are using Visual Studio 2015.
According to the .NET Standard, .NET Standard 2.0 support .NET Framework 4.6.1 (with .NET Core 2.0 SDK):
So we need install .NET Core 2.0 SDK. And every communication from Microsoft about the preview of .NET Core 2.0 mentions Visual Studio 2017, so I think it's highly recommanded to use Visual Studio 2017 to work with .NET Core 2.0.
Besides, the NuGet package NETStandard.Library.NETFramework is deprecated.
So install a .NetStandard 2.0 Nuget package into a Net 4.6.1 project, I highly recommanded to use Visual Studio 2017 to work with .NET Core 2.0.
Hope this helps.
I try to load an existing project (not mine) that I get from TFS and I got an error telling me that I need .NET Framework 4.6.1 to load it.
So I downgraded it to 4.6, successfully load it, install .NET Framework 4.6.1 but I can't make my project target on 4.6.1.
The link where I get .NET framework
I'm on Windows 7 and I use Visual Studio Community 2017.
You may need to install the developer pack. It looks like you may have just installed the runtime. You can find the .NET Framework 4.6.1 developer pack here.
I have recently upgraded my Visual Studio environment, and now I seem to have a problem with my .Net framework, as you can see in following error message:
9> C:\Program Files (x86)\Microsoft Visual Studio\2017\Professional\MSBuild\15.0\Bin\Microsoft.Common.CurrentVersion.targets(1126,5): error MSB3644: The reference assemblies for framework ".NETFramework,Version=v4.5" were not found. To resolve this, install the SDK or Targeting Pack for this framework version or retarget your application to a version of the framework for which you have the SDK or Targeting Pack installed. Note that assemblies will be resolved from the Global Assembly Cache (GAC) and will be used in place of reference assemblies. Therefore your assembly may not be correctly targeted for the framework you intend.
(the number "9" is just a counter of the nineth project within my Visual Studio solution)
Let me explain you what's so confusing about this situation:
When I load my solution, I get following error message:
The C# project ... is targeting ".NETFramework,Version=4.5", which is not installed on this machine. To proceed, select an option below:
Change the target to .NET Framework 4.6.1. You can change back to ".NETFramework,Version=4.5" at a later time.
Download the targeting pack for ".NETFramework,Version=4.5". The project will not change.
Do not load the project.
I choose for the second option, and I get following website: .NET SDKs for Visual Studio
This gives the following: list of .NET Frameworks:
4.7.1 Developer Pack, included in Visual Studio 2017 Runtime Release Details
4.7 Developer Pack, included in Visual Studio 2017 Runtime Release Details
4.6.2 Developer Pack, included in Visual Studio 2017 Runtime Release Details
4.6.1 Developer Pack, included in Visual Studio 2017 Runtime Release Details
4.6 Developer Pack, included in Visual Studio 2017 Runtime Release Details
4.5.2 Developer Pack, included in Visual Studio 2017 Runtime Release Details
3.5 SP1 Developer Pack, included in Visual Studio 2017 Runtime Release Details
=> Where is 4.5?
I have already different times downloaded 4.5.2 version, Developer Pack as well as Runtime, but nothing changes.
So, after a while, I just close the dialog box about the missing target. I'm expecting to get a more readable error message, once I get to the compilation of the project.
Next to that, I've also investigated the installation of my PC (PC settings, Add and Remove Programs), this gives following list:
Microsoft .NET Core SDK - 2.1.4 (x64)
Microsoft .NET Framework 4.5 SDK
Microsoft .NET Framework 4.5.1 Multi-Targeting Pack (ENU)
Microsoft .NET Framework 4.5.1 SDK
Microsoft .NET Framework 4.5.2 Multi-Targeting Pack (ENU)
Microsoft .NET Framework 4.6 Targeting Pack
Microsoft .NET Framework 4.6.2 SDK
Microsoft .NET Framework 4.6.2 Targeting Pack
Microsoft .NET Framework 4.7 SDK
Microsoft .NET Framework 4.7 Targeting Pack
=> Ok, there seems not to be a targeting pack for 4.5 (only the SDK seems to be present), but what to do about it?
The error message speaks about retargeting my application, but that's out of the question: I'm the only person, having this problem, and modifying the configuration of a central application is not a solution.
The error message also speaks about the so-called "Global Assembly Cache" which will be used in place of reference assemblies. So, let's have a look at those things:
I seem to have two reference assemblies on my PC:
C:\Program Files\Reference Assemblies\Microsoft\Framework (seems only to contain "v3.0" and "v3.5" directories)
C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework.
The latter seems to contain a ".NETFramework" directory, which, at his turn, contains a "v4.5" subdirectory, containing quite some XML files.
The error message however states that those are not used, the "Global Assembly Cache (GAC)" is used instead. If I try finding this, I find references to gacutil, sn -k ... and other programs which are not found on my PC for the specied .Net framework.
If I look, using Google, for "Microsoft .Net Framework 4.5 Targeting Pack" (exact phrase), I get zero results.
So, in other words, I get a message about a missing piece of software on my PC. I get the opportunity to install it but the installation does nothing. Then I get a compilation error about this, which talks about a very general technology which seems not to exist following Google, the mostly used search engine on the internet. It mentions a technology (GAC) which might be used or not and who is found, either on C:\Program Files or C:\Program Files (x86), and its corresponding tool (gacutil) seems only to exist on my PC for other versions.
Can anybody give me a push in the right direction here?
Thanks in advance
Meanwhile I've solved the issue, and it comes down to a general truth in working with computers:
When you have a problem, don't listen to what your computer tells you, but ask yourself what you were doing when the problem arose.
In my case, it means the following:
The problem popped up when I had upgraded my Visual Studio version (using the Visual Studio Installer), so the solution consisted of starting that Visual Studio Installer again, and check some more features to be installed (I've now checked so many of them that I can't figure out which one exactly solved my problem).
The error message, preceeded by the dialog box, were just information about the PC internals which only led to ununderstandable sidetracks.
The boxes that I checked and seemed to work were ASP.NET framework, Office/Sharepoint development, Linux development with C++, and Visual studio extension development, all under workloads. Under the individual packages I checked every single .Net framework SDK and targeting pack.
That worked eventually.
I was getting the same error on my net6 app. The build was happening on the solution and I had a reactApp included in my solution and it was doing a build on that.
I removed any Build & Deploy on that by:
Right click on my solution, -> Properties -> Configuration Properties ->
set Configuration to All Configurations
set Platform to All Platforms
then uncheck reactApp for Build and Deploy.
At the end on my CI/CD pipeline I saw:
The project "reactApp" is not selected for building in solution configuration "Debug|Any CPU".
I had the same issue in azure devops. my build was failing with same error msg. what fixed mine was to install .net Framework 4.8 developer pack. you can download it here
https://dotnet.microsoft.com/en-us/download/visual-studio-sdks?cid=getdotnetsdk