Unable to check in code in Visual studio 2010(TFS 2010)

Question

I am working on an Asp.net web application. Since yesterday I am unable to check in my code. But I am able to get latest code, compare files , View history and create work items.

While check in- Neither the error message is displayed nor The file that needs to be checked in is locked.

Suspect:-
The application is written for VS 2010. But,Once I opened it on vs 2012. Later I made necessary changes to the solution file so that It re-opens on VS 2010 again. Can this be the reason why check in is not working? Please let me now if you have any suggestions. Thanks.

Answer 1

"Lock "Check-in". This is also known as the "antisocial":-). A check-in lock prevents anyone else from committing their changes to that file until you have released the lock. This means that they will be responsible for performing any conflict resolution activities that result. You can place a check-in lock on a file even if somebody has a file checked out with a lock type of "none" ie I know you are working on this file but you are not allowed to check in your changes until I have made this important quick fix."

Probably this is the case, someone check out the file after your check out. Check who check out the file and contact with him, this is the best advice which I can give you.