VS2012/2013 fails to display solution explorer - visual-studio-2012

I have this problem with both VS2012 and 2013. When I load an existing or create a new solution I get a ProviderPackage error - An exception was thrown during package instantiation and was caught in the package manager. After I close the error dialog, the solution explorer window is empty, although there are solution files open in the editor.
The ActivityLog.xml file shows different modules loading when the error occurs, depending on the project type. Is there a way that I can determine the common thread between 2012 and 2013 that is causing this error.
There is probably a corrupted dll which I have to replace. I am dead in the water until I figure this out.
Help.


Clearing the Visual Studio Component Model Cache worked for me (details: Error message "No exports were found that match the constraint contract name")


None of the previous suggestions worked for me, but this one did:
http://www.hjerpbakk.com/blog/2014/7/25/no-content-in-solution-explorer-using-visual-studio-2013
This issue is because of a MEF cache corruption. Installing [or uninstalling any extension] will invalidate the cache causing VS to rebuild it.


I ran into the empty solution explorer with Visual Studio 2013, and fixed it with a repair install.


Solution: This worked for me.
I had the same problem in Visual Studio 2015 with the Solution Explorer always showing empty, even after deleting the ComponentModelCache folder. Looking at the Microsoft.VisualStudio.Default.err file, one of the errors was:
"----- Catalog construction errors -----
Error #1
Microsoft.VisualStudio.Composition.PartDiscoveryException: Failure while scanning type ......"
Doing a Google search on Microsoft.VisualStudio.Composition.PartDiscoveryException lead me to a Nuget package for Visual Studio MEF. Since I read so many posts of people have this same problem, I figured the problem was with Visual Studio and not necessarily any particular extension. So I installed this Visual Studio MEF Nuget package, restarted Visual Studio, and now the Solution Explorer is populated every time.
Nuget: https://www.nuget.org/packages/Microsoft.VisualStudio.Composition/


Deleting the .suo file worked for me.


Close VS, delete suo file of your project (is hidden), open your project again.
I had this problem with two projects, this fixed it in both cases.


Also, creating a new project (in my case a Console Application) also worked! That was probably the easiest fix i've found thus far and you don't have to delete anything! Nice...


Go To Window menu in visual studio and click reset window layout...it will work

Related

Visual Studio 2017. LNK1104: cannot open file ….\Debug\….exe after single successful build

I am having a very weird issue. I am able to build my C++/CLR Win Forms project with visual studio 2017 only once. Every next time I am getting “LNK1104 cannot open file ….\Debug\….exe” error.
What I have noticed is that after stopping debugging the program is still visible in Task Manager which is I believe the reason of getting the above message.
When I try to kill it am getting “access denied”.
The only way to compile the project is to restart visual studio. The process shuts down immediately together with visual studio. Once the visual studio is back on I can do a single build again.
I have tried to run "clean" project and solution.
I have also created new project and moved my files in it. What I have noticed is that before having my form filled with controls the problem was not appearing. It started happening after adding few textBoxes, ListView and buttons.
Any ideas how to fix it?

I figured out what was causing the issue. I have tried with switching off multiple Windows security features and finally I found the right one. The problem appeared to be a Windows 10 built in "Real-time protection" against malware. It can be disabled under "Virus & threat protection settings".

Android studio messed up every xml file. How to resolve it? [duplicate]

I have an odd problem with Android Studio.
Here is how my class file looks like on Android Studio
And here is what it looks like on a text editor.
Any ideas why it is happening? I have tried closing then reimporting the project, invalidate caches and restart, clean project, build project, delete .idea folder and .iml files. All of my files are broken when opening in AS but looks fine on text editors.

UPDATE: Quicker solution by the user Hong given below:
Delete the caches folder: C:\Users\my_user_name\.AndroidStudio3.3\system\caches
=====================
Here's what worked for me.
Close Android Studio
Go to C:\Users*your username*
Locate the Android Studio settings directory named .AndroidStudioX.X (X.X being the version)
Rename it to something like old.AndroidStudioX.X
Start Android Studio, and when it asks if you want to import settings, choose the old directory
This should fix the issue.

Thanks to the Answer of Asim, I found deleting folder caches fixed the problem for my case (all gradle files in Android Studio show contents that have nothing to do with the actual contents of these files):
C:\Users\my_user_name\.AndroidStudio3.3\system\caches
Edit[2020-07-17]:
This is still happening with Android Studio 4.0, so I have to delete the following folder to fix this problem:
C:\Users\my_user_name\.AndroidStudio4.0\system\caches
Edit[2021-11-08]:
This solution no longer works for Android Studio Arctic Fox. Please see the new answer by Nikunj Paradva. I have used the new solution and it works.

Solution for Android studio Arctic Fox and Higher Versions
Steps
Exit Android Studio
Delete caches folder from
C:\Users\{username}\AppData\Local\Google\AndroidStudio2020.3 // For Arctic Fox
Open Android Studio and your code has being Perfect
Check your Android studio version and Target that version folder at below location
C:\Users\{username}\AppData\Local\Google
Note : AppData folder is Hidden in Windows

Does this situation warrant a bug report?
Yes! In fact this problem has been reported to the Android Studio team, and anyone willing to help us investigate is welcome to contribute there. Thanks!
You can also try the workaround in Hong's answer.

Close Android studio and then delete the caches folder: C:\Users\user_name\.AndroidStudio3.4\system\caches

Try to delete the Android Studio IDE cache data listed below per your platform:
Windows:
%USER%\.AndroidStudio[Preview]_X.Y_
Mac:
~/Library/Preferences/AndroidStudio[Preview]_X.Y_
~/Library/Caches/AndroidStudio[Preview]_X.Y_
~/Library/Logs/AndroidStudio[Preview]_X.Y_
~/Library/Application Support/AndroidStudio[Preview]_X.Y_
Linux:
~/.AndroidStudio[Preview]_X.Y_
See: https://developer.android.com/studio/releases#delete-unused

Updated my android studio days ago and was faced with the same problem. Solved it by uninstalling android studio and reinstalling the previous version set up I had left the SDK intact so I didn't have to re-download them working perfectly guess I won't be updating again soon.

Thanks to #Henry for confirming, by several similarly observed whacko problems the past two days, that my problem is indeed caused by a bug in AS. Follow his links to become convinced yourself. I'll let Henry file the bug report.
So there's no fixing my problem in situ without great effort--wait for bug fix.... which could take awhile.
So here's what I did to work around it and get back to work (it took less than 10 minutes):
create new project with no activity
(Do the rest inside the IDE, not using Windows or DOS.)
copy all .java files into the java folder in the IDE (it's ...\app\src\main\java\)
copy all res folders into the res folder (...\app\src\main\res\)
copy all asset files into main folder (...\app\src\main\assets\)
copy androidmanifest.xml into main folder (...\app\src\main)
do a global replace of old project name to new project name
I didn't change any of the files in the new project's ...\app\ folder because compilation was normal.
(I'll tell you this: when I saw what I THOUGHT were mangled FILES and looked at the History and saw nothing resembling what should have been there, I got a sick feeling, but I immediately opened Windows Explorer, selected all of the project's java files, and opened them, en masse, with Notepad++. Whew. No problems seen. (I didn't really think AS could actually mangle the files and I doubt it ever could. But it did wake me up at 5am!))

copy your android project to another location then open it from android studio

I changed my projects location and it solved my problem. This happened when my system was accidently shut down due to power failure.

Visual Studio 2015 - Class Wizard in C++

When I right click my project and go to Class Wizard I'm met with the following error:
"The solution's source code database may not have been opened. Please make sure the solution is not open in another copy of Visual Studio, and that its database file is not read only."
What I've tried so far:
Creating a new project
Restarting Visual Studio
Restarting PC
Repairing Visual Studio
Reinstalling Visual Studio
Installing MS SQL Server Compact 3.5
Deleting the folder: C:\Users\Jacob\AppData\Roaming\Microsoft\VisualStudio\14.0
None of these have had any effect, and I'm finding very few pages online where others have had this issue. I am totally at a loss on what to do next.
If anyone has any ideas, I would really appreciate them.

It turns out the problem here was actually caused by JetBrains Resharper C++, which I didn't consider could be the problem.
There seems to be no solution, however the program provides an alternative Class Wizard in the same menu.

Error in Microsoft Visual Studio 2012 :No exports were found that match the constraint

When I opened my Project in VS2012 , I got an error
No exports were found that match the constraint:
ContractName Microsoft.VisualStudio.Utilities.IContentTypeRegistryService RequiredTypeIdentity Microsoft.VisualStudio.Utilities.IContentTypeRegistryService
Please correct before proceeding. (You might rename the current web.config and add a new one).
Why did this happen, can someone please suggest a solution?

I solved this problem by clearing the Visual Studio Component Model Cache.
Just delete or rename this folder:
%AppData%\..\Local\Microsoft\VisualStudio\11.0\ComponentModelCache
Or, for Visual Studio 2013:
%AppData%\..\Local\Microsoft\VisualStudio\12.0\ComponentModelCache

I have fix this with update :
http://www.microsoft.com/en-in/download/confirmation.aspx?id=36020#
I'm on windows 8.1 and Visual Studio 2012.

I encountered similar issue and found this solution like magic. The steps go here:
Delete ComponentModelCache folder from below location:
C:\Users\\AppData\Local\Microsoft\VisualStudio\11.0
Make it sure to replace with your real user name on your pc.
Once deleted, recreate the folder with same name "ComponentModelCache".
In case, it gives any permissions issue, deleting the remaining files/folders one by one can work well.
The error is no more there when you try to create a project in visual studio.

Project dependencies not loading in Visual Studio 2012

I'm not sure if this is a add-on/extension issue but I'm having a heck of a time with Visual Studio 2012 on two computers. I believe it is DevExpress CodeRush causing the problems as it seems to work fine when I uninstall it but I'm not 100% sure.
I startup VS 2012, answer YES to the Get Latest from TFS 2012 and the solution right-click the solution node in the Solution Explorer and choose Project Dependencies... - it shows nothing checked. Of course the build will fail. I close and restart VS 2012 and then it shows. I typically do this through the course of the DevExpress option to clear the solution cache which causes the solution to reload.
Does anyone have any suggestions as to what may cause the project dependencies to get lost yet after a restart they are fine again? Is there something I need to delete and rebuild to try and resolve this?

The fix (so it seems) is to not check the option in VS source control settings to do a Get Latest when opening the solution. It seems to prevent the solution from initializing properly. I will consider reporting this to Microsoft Connect.

As I know CodeRush does not change anything in the Project Dependencies dialog. However you can write to DevExpress Support Center (http://www.devexpress.com/Support/Center) for a more detailed answer and research.
I also recommend you include a project and a video that illustrates the problem (if possible).

I was facing same issue. However got fixed after deleting .suo file from solution folder

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