In Windows 8 & 10, you have to right-click devenv.exe and select “Troubleshoot compatibility”.
- select “Troubleshoot program”
- check “The program requires additional permissions”
- click “Next”
- click “Test the program…”
- wait for the program to launch
- click “Next”
- select “Yes, save these settings for this program”
- click “Close”
From: http://stackoverflow.com/a/12859334/63786