Visual Studio Hosting Process and “The operation could not be completed”

Question

When trying to execute from within Visual Studio 2008 your application and you get the (uninformative) message \"The operation could not be completed\".

The solution

Answer 1

There are several causes and workarounds regarding to this problem and you might try the following ones that are useful most of the time:

Delete the "Your_Solution_FileName.suo" file and restart Visual Studio.

or

Right click on the project and select Unload Project and then click Reload Project by right clicking on the project again might also fix it.

Hope this helps...