You need TFS 2012 to use Code Reviews:
This feature is only available when running with VS2012 + TFS 2012. If you connect to a 2010 TFS server with VS 2012 the code review feature should not show up in the team explorer.
문제
Is it possible to enable Code Review in VS2012 with a TFS2010 server?
Our should we upgrade our TFS server to TFS2012 before its possible?
해결책
You need TFS 2012 to use Code Reviews:
This feature is only available when running with VS2012 + TFS 2012. If you connect to a 2010 TFS server with VS 2012 the code review feature should not show up in the team explorer.
다른 팁
If you are not going to upgrade TFS from 2010 to 2012 in the near future, there is another option.
You may try Review Assistant by Devart - an alternative code review plugin for Visual Studio.
It has functionality similar to the built-in VS 2012 code review feature. But it supports integration with TFS 2010 as well as with Git, SVN, and Mercurial.