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

Question

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?

Here is the solution to this problem, [http://stackoverflow.com/questions/17596543/no-exports-were-found-that-match-the-constraint-contract-name][1] [1]: http://stackoverflow.com/questions/17596543/no-exports-were-found-that-match-the-constraint-contract-name — Asghar, Jan 01 '14 at 23:16
exact duplicate of [Error message "No exports were found that match the constraint contract name"](https://stackoverflow.com/questions/17596543/error-message-no-exports-were-found-that-match-the-constraint-contract-name) — underscore_d, Dec 28 '17 at 12:07

score 158 · Answer 1 · edited Jul 03 '15 at 10:15

158

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

edited Jul 03 '15 at 10:15

Steffen Winkler

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answered Oct 09 '13 at 08:09

viru

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You can use %LocalAppData% instead of %AppData%\..\Local – jamesrom May 03 '17 at 05:55

score 14 · Answer 2 · answered Oct 18 '13 at 07:05

14

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.

answered Oct 18 '13 at 07:05

Joffrey Hernandez

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Just had this problem, tried your method, it worked, Thanks a lot :) +1 – Mar 04 '14 at 00:23

score 13 · Answer 3 · answered Mar 26 '14 at 15:24

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.

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

3 Answers3

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