I have a suspicion that my Visual Studio Intellisense has stopped working. I have read that this may be the cause of the NCB file being corrupted and needs to be deleted. I have searched for the NCB file throughout my computer but no search results have popped up. Where can I manually locate this file?
If you have one: it should be in the same directory as your solution (.sln) file, with the same basename.
If your solution is C:\projects\acme.sln then it should be C:\projects\acme.ncb.
But: Starting with Visual Studio 2010, it no longer uses the .ncb system. Instead, it creates a file with a .sdf extension.
So you should probably be looking for C:\projects\acme.sdf.
See IntelliSense/Browsing options in VC++ 2010 for more information.
来源：https://stackoverflow.com/questions/6296072/where-is-visual-studios-ncb-file-located