VS 2012: No exports were found that match the constraint : ContractName
This morning, one of the fellow developers shared the issue. He was getting the error below while opening any of the files: And some other guys came up with the same thing. I tried to find the root cause, was unable to do so. I'll update this post if I find that. However, there is good news. I've got the solution: Resolution steps are ; -Close Visual Studio - Go to the location C:\Users\ navdeep \AppData\Local\Microsoft\VisualStudio\11.0 (replace navdeep with your user id) - Delete the folder ComponentModelCache. - Start Visual Studio It builds the component cache and the things are working again :-)