Value cannot be null. Parameter name: pUnk - visual-studio

I have upgraded my visual studio to visual studio 2019 and now sometime with few
files while trying to check in code to TFS its giving me error:
Value cannot
be null. Parameter name: pUnk
I tried even to delete whole source code and downloaded it again but no success.

Seems like its an issue with Visual Studio Preview 2019:
https://developercommunity.visualstudio.com/content/problem/398508/value-cannot-be-null-parameter-name-punk-when-chec.html

In my case vs2019 Preview hasn't been near my machine but I encountered this in vs2017.
Couldn't get rid, but luckily I hadn't uninstalled vs2015 from my machine and was able to check in using that.
Bit of an edge case workaround maybe...

I had this issue with Visual Studio 2017. I had multiple instance of visual studio and one instance Licensed with different account (admin). Closing other instance of visual studio solved my problem.

Related

Visual Studio crashes when locking computer or starting another instance

I have the problem that Visual Studio 2013 crashes when I lock the computer or start another instance of Visual Studio.
I use Visual Studio 2013 with latest patches applied. I always start Visual Studio as Admin.
This seems to only happen with a certain big solution. This problem did not occur to me with other solutions.
I tried to delete the solution and make a clean checkout from TFS, but Visual Studio still crashes.
I know this is not much information, but do you have any idea how to fix this or how to what else I could check?
Additional Information: This still happens even with Visual Studio 2015 on a fresh Windows 8.1 installation...
Here's the error:
Use the following steps to solve the issue:
Source: http://resharper-support.jetbrains.com/entries/24765142-Visual-Studio-with-ReSharper-is-freezing-and-or-crashing
I would copy the solution with quotation but as you can see, there is a lot of text to edit.
Start Visual Studio using the /log switch. Then check the created log file for warnings and errors:
%APPDATA%\Microsoft\VisualStudio\11.0\ActivityLog.xml
If you use a Web Browser to view the file, it will be nicely formatted, due to the accompanying xsl-sheet.

Visual Studio takes ages creating a project

I have problem with my Visual studio 2013. When I'm trying to create even a simple console application,VS hangs and after a while the message 'Visual studio is busy: Microsoft Visual studio is waiting for internal operation to complete.' shows up.
I have reinstalled Visual Studio but without any luck. I've used ProcMon to check devenv and all the paths it shows, have to do with Android Studio.
I 'solved' the problem by accident. I disabled Source Control and for some reason, VS started working again. I know it's not an ideal solution but works just fine when you need VS urgently.
Don't know if Visual Studio is one of those programs. Someone correct me if I'm wrong, but I believe even after uninstalling, Visual Studio keeps some files in the registry from your previous installation and the AppData folder. You might want to clear those.
Close Visual Studio (if you haven’t already).
Open the registry editor (regedit.exe)
Delete the
HKEY_CURRENT_USER\Software\Microsoft\VisualStudio{version}
Delete the
HKEY_CURRENT_USER\Software\Microsoft\VisualStudio{version}_Config
Delete the %USERNAME%\AppData\Local\Microsoft\VisualStudio{version}
directory.
Use {version}=10.0 for Visual Studio 2010
Use {version}=11.0 for Visual Studio 2012
Use {version}=12.0 for Visual Studio 2013
Hope this helps

Error in Visual Studio 2013: "No exports were found that match the constraint"

I don't know what happen with my Visual Studio 2013 Update 2.
When I opened my project, it displayed this message:
No exports were found that match the constraint:
ContractName
Microsoft.Internal.VisualStudio.PlatformUI.ISolutionAttachedCollection.Service
RequiredTypeIdentity
Microsoft.Internal.VisualStudio.PlatformUI.ISolutionAttachedCollection.Service
I am really confused. I've tried this solution, but it didn't solve my problem...
I had the same problem, so I shut down Visual Studio 2013, renamed the folder
C:\Users\{username}\AppData\Local\Microsoft\VisualStudio\12.0\ComponentModelCache
to ComponentModelCache-old, and restarted Visual Studio which rebuilt the ComponentModelCache folder and all is back to normal.
It's not possible to help you without knowing:
the complete list of installed extensions,
the exact Visual Studio 2013 version,
the exact Windows version,
a brief reproduction script.
The most important clue you can get about the root cause, can be seen in Visual Studio Activity Log. I suggest starting Visual Studio with activity logging enabled (devenv.exe /log), reproducing the error and checking the log.
How to: Use the Activity Log,
Troubleshooting Extensions with the Activity Log.
If you download Visual Studio 2013 from Microsoft you will find the path C:\Users\{username}\AppData\Local\Microsoft\WDexpress\12.0\ComponentModelCache.
You should remove the file Microsoft.VisualStudio.Default.cache.
Then restart Visual Studio.

Unable to start Visual Studio 2010

Unable to start Visual Studio 2010.
Error
The type name could not be resolved Parameter name: windowtype
Screenshot
The only solution I had in mind is to re-install Visual Studio or Windows.
Is there any other way to remove this error.
As per MSDN, this issue is resolved. Here is the link
http://connect.microsoft.com/VisualStudio/feedback/details/572085/isolated-shell-2010-unable-to-call-com-component-in-exe-before-start
I think downloading and applying the latest service pack and hot fixes (you can get using Windows Update), will do the trick.

Error message "No exports were found that match the constraint contract name"

This morning I faced a problem while opening my Visual Studio solution, and when I tried to run it, it said:
No exports were found that match the constraint contract name
How can I fix this problem?
I solved this problem by clearing Visual Studio Component Model Cache.
Just delete or rename this folder:
%LocalAppData%\Microsoft\VisualStudio\11.0\ComponentModelCache
or
%LocalAppData%\Microsoft\VPDExpress\11.0\ComponentModelCache
and restart Visual Studio.
The version of Visual Studio you have is specified by the number e.g.
Visual Studio 2012 is 11.0 (as shown above)
Visual Studio 2013 is 12.0
Visual Studio 2015 is 14.0
Visual Studio 2017 is 15.0
Visual Studio 2019 is 16.0
For those that don't know:
%LocalAppData%\ is the same as C:\Users\{yourUsername}\AppData\Local
For those who have multiple versions of Visual Studio installed, e.g. 2012 and 2013, it might help to remove the ComponentModelCache for both versions before restarting Visual Studio, e.g. 11.0 and 12.0.
No need to rename or delete the whole folder:
(%AppData%\..\Local\Microsoft\VisualStudio\11.0\ComponentModelCache)
Just rename or delete the Microsoft.VisualStudio.Default.cache file inside the above location.
Visual Studio Express 2012 has different paths.
Visual Studio Express
...\Users\{user}\AppData\Local\Microsoft\WDExpress\11.0\ComponentModelCache
With Visual Studio Express 2012 for Web
...\Users\{user}\AppData\Local\Microsoft\VWDExpress\11.0\ComponentModelCache
I did not have to re-install Visual Studio Express
This will really work like a champ:
Solution: Try to delete ComponentModelCache folder from the below location.
[C:]\Users\[your user name]\AppData\Local\Microsoft\VisualStudio\[Visual Studio version number]
And after successful delete, recreate the folder with the same name, "ComponentModelCache".
This issue can be resolved by deleting or clearing all the folders and files from %AppData%\..\Local\Microsoft\VisualStudio\11.0\ComponentModelCache
This actually clears the Visual Studio component model cache.
On Windows 7 machines, the path is different. When you type %appdata% in Run dialog, it opens the folder C:\Users\<username>\AppData\Roaming.
Click the 'up' button to navigate to the parent folder and select the folder 'Local'.
Final path: C:\Users\<username>\AppData\Local\Microsoft\VisualStudio\11.0\ComponentModelCache
Deleting the Component Model Cache did not work for me (well, the relative directory given above did not exist in my machine). Instead, I installed an extension to Visual Studio 2012 Express. Menu Tools → Extensions and Updates... → Online → Choose any and then download. This apparently invalidates the cache causing Visual Studio to rebuild it.
Here's my source.
For Visual Studio 2013 you need to remove that folder from this path:
%AppData%\..\Local\Microsoft\VisualStudio\12.0
for Visual Studio 2012 and later versions, the solution must be deleting the content of the folder ComponentModelCache:
C:\Users\[username]\AppData\Local\Microsoft\WDExpress\11.0\ComponentModelCache
Visual Studio 2013
C:\Users\[username]\AppData\Local\Microsoft\VisualStudio\12.0\ComponentModelCache
I had the same problem upon launching Visual Studio 2013 Ultimate, and the solutions here didn't work for me. I tried deleting the mentioned folders and starting Visual Studio again, but it didn't work.
However I had other problems too, like Microsoft.visual studio package did not load correctly and also Page '312e8a59-2712-48a1-863e-0ef4e67961fc' not found VS 2012. The latter refers to a message in the Team Explorer window saying "Page 'somenumber' cannot be found".
So I run devenv /setup on the Visual Studio command prompt with administrative rights. It did the job, and everything is fine now.
Remove ComponentModelCache folder content.
%AppData%..\Local\Microsoft\VisualStudio\11.0\ComponentModelCache
Clearing the folders didn't work for me. So I went to 'Programs and Features' and used the change button to startup the Visual Studio 2013 setup.
In the setup I choose the repair function and that fixed the problem for me.
I had the same problem with Visual Studio Express 2013 of Windows 8.1.
Unfortunatly there was no "ComponentModelCache" folder in
%AppData%..\Local\Microsoft\VisualStudio\12.0\ComponentModelCache.
I found the "ComponentModelCache" folder in
..\Users[username]\AppData\Local\Microsoft\WDExpress\12.0
and solved this problem by removing this folder from there.
If you have VS 2013, you have to go to: %LOCALAPPDATA%\Microsoft\VisualStudio\12.0
then rename the ComponentModelCache folder.
I experienced a similar problem after some updates released from Microsoft (part of them where about .NET framework 4.5).
On the Internet I got the following link to the Microsoft knowledge base article:
Update for Microsoft Visual Studio 2012 (KB2781514)
It worked for me.
This happened to me with Visual Studio 2013 Web, after Windows installed several updates. Unfortunately none of the suggestions in this thread helped.
I had to re-run the installer and select the "Repair" option. After that (and a reboot) it was working once again.
In some cases you may have to repair more than one version of Visual Studio. One example is when a Script Task control in VS 2013 opens VS 2012 when you click Edit Script.
Renaming the ComponentModelCache folder worked for me in Visual Studio 2015, but with a slightly different path:
%AppData%\..\Local\Microsoft\VisualStudio\14.0\ComponentModelCache
I have Windows 7 x64 with a second partition on which Windows 8 (preview installed). While working with Microsoft Visual Studio Express 2012 for Windows Phone, I come up with the same problem. But the ComponentModelCache is found here:
C:\Users\Jayaram\AppData\Local\Microsoft\VPDExpress\11.0
I am unable to delete or rename as I get the "access is denied" message when I try to use command prompt:
Administrator: VS2012 X64 CrossToolsCommandPrompt
This issue is because of a MEF cache corruption.
Installing the feedback extension (or installing any extension) will invalidate the cache causing VS to rebuild it.
click for source.
i experienced this problem in Microsoft Visual Studio Express 2012 for windows phone while trying to open file.
Then i browsed to
C:\Users\MyUserName\AppData\Local\Microsoft\VPDExpress\11.0\ComponentModelCache
And Inside ComponentModelCache i deleted Microsoft.VisualStudio.Default.cache CACHE file. Finaly i restarted visual studio and reopened my project.
Then my problem was solved, i was able to open file.
Note: My OS is windows 8. And i installed SDK 8 for developing windows phone app
Thanks
I am using Visual Studio 2012. After installing the Visual Studio 2013 web express, when I want to run or open any project in Visual Studio 2012 it shows me the following error:
"no exports were found that match the constraint contract name".
I also tried the above solution for clearing the ComponentModelCache,
but I did not find the folder. I solves my problem just by: Repair Visual Studio 2012
For the Express versions of the software, the folder you need is in a slightly different place(s): For Express 2012 for Web it is C:\Users\XXXXXXXX\AppData\Local\Microsoft\VWDExpress - not in the Visual Studio folder.
I got an error with the same error message - two years later.
It's a different problem this time though, related to .NET Core dnx things.
I couldn't find an answer on Stack Overflow, but there's a GitHub issue that contains a workaround: https://github.com/aspnet/Home/issues/1455
Below is the most important part of the workaround:
Delete the entire C:\Program Files (x86)\Microsoft Visual Studio
14.0\Common7\IDE\Extensions\Microsoft\Web Tools\DNX directory. (As far as I understand, it belongs to the old version of ASP.NET Core
RC1, which for some reason is still shipped even with Visual Studio 2015 Update-3).
Delete the C:\Users\<user>\AppData\Local\Microsoft\VisualStudio\14.0\devenv.exe.config file.
Run the Developer Command Prompt for Visual Studio 2015 as Administrator, and execute the devenv /setup command. The new devenv.exe.config file is generated. This time there are many assemblies that refer to the
C:\Program Files (x86)\Microsoft Visual Studio 14.0\Common7\IDE\Extensions\Microsoft\DotNet directory.
Run the Visual Studio 2015 and check that it shows the Microsoft .NET Core Tools (Preview 2) 14.1.20624.0 in the Help => About Microsoft Visual Studio menu.
Thanks to olegburov's post on GitHub for figuring this out.
I had to uninstall some external components like Postsharp and Apex and then it worked. I also tried the chosen solution but it gave me more errors.
Deleting the folders haven't worked for me i have go control panel and repaired
Visual Studio Installer Projects extensions for VS 2013.
And it worked for me
I got this error after reinstalling IntelliJ IDEA and ReSharper for C# in Visual Studio 2013.
First, I got an error problem with extensions, and after this I got this error:
"No exports were found that match the constraint contract name”
I simply removed folder ComponentModelCache and resolved this error.
My 2 cents:
Following all above lifesaving tips, I had a slightly different experience; mine is VS 2017 Community Edition, installed once, and I notice that have all these 3 folders:
%LocalAppData%\Microsoft\VisualStudio\15.0 ==> Empty
%LocalAppData%\Microsoft\VisualStudio\7f0c75b0 ==> has only the CoreCon folder
This is the one that has the ComponentModelCache:
%LocalAppData%\Microsoft\VisualStudio\15.0_7f0c75b0
Deleting only the Microsoft.VisualStudio.Default.cache had no effect.
So, I deleted all 4 files there: .cache, .err, .external and catalogs.
On restarting VS, problem gone and appeared a 5th file:
Microsoft.VisualStudio.Default.scan
Removing ComponentModelCache did not work for me. Reinstalling VS 2019 did thanks to a recommendation on this Microsoft support thread.
Details
This seems to be a known bug with a fix incoming from MS (as of 1/7/2020)
Experienced after upgrading from VS2019 Pro 16.2 (i think it was?) to 16.4.2 using Visual Studio Installer
Error displayed when trying to launch both nuget console and nuget package manager

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