I noticed that unexpectedly Visual Studio 2010 changed the keyboard layout.I tried some solutions like:
- Going to Windows\' Control Panel and removing other
Returning to this topic as I had the same problem. Namely, Ctrl+space did NOT fire intellisense or autocomplete, but instead just permanently changed the keyboard layout that couldn't be changed back again unless I restarted VS2010. Tried quite a few solutions myself without results.
I finally got it working by erasing all other language settings from Windows save for Finnish. Then restarted VS2010 and voilá, haven't seen the problem since.
Changing keyboard language priority to Finnish in Windows didn't help, I had to delete all the other installed language settings. Also, changing the settings from VS2010 to use Windows settings for keyboard layout didn't help at all either.
And the problem was never the wrong shortcut, Ctrl+space was always mapped for intellisense / autocomplete.