visual studio right click missing find all refences and go to definition disabled

Question

I am using Visual Studio 2010, suddenly from right click menu Go to Defination option is disabled and even F12 does not work. Find all referneces option is missing from th

Answer 1

I am working on a solution with C++ combined with C# which is set to VS 2010 compiler but I edit it with the 2013 IDE. All of this is orchestrated with the MS-TFS. I searched for both *.ncb and *.sou files but couldn't find them. Eventually I saw eodabash's comment of changing the File Extension option, and hey presto, it works for me...