Ctrl + Dot (ShowSmartTag) not working in Visual Studio 2012

Question

I\'m now using the Visual Studio 2012, and now the keyboard shortcut for \"ShowSmartTag\", Ctrl + ., is not working. I googled a bit found so

Answer 1

All keyboard shortcuts can be viewed from Tools > Options > Environment > Keyboard. What does your View.ShowSmartTag command say about current shortcuts?

If you try to assign CTRL + . to anything, it will tell you if the shortcut is used by something else...