How to Fix Unrecognized Guid format in Visual Studio 2015
visual-studio, visual-studio-2015
Solution
I am guessing you used to run Visual Studio as Administrator. This did it for me. The answer is to delete the compatibility entry in the registry.
- Type Windows+R on the keyboard to open the Run dialog
- Type regedit and press enter
- Browse to HKEY_CURRENT_USER\Software\Microsoft\Windows NT\CurrentVersion\AppCompatFlags\Layers
- Delete the Visual Studio entry
Problem
I'm getting an "Unrecognized Guid format" error when I try to open my project in Visual Studio 2015 on a Windows 10 machine (upgraded from Windows 7). This did not always occur for me. I originally made VS studio open as administrator (because my project needed it at the time) by following the steps in the anwser here: Can you force Visual Studio to always run as an Administrator in Windows 8? I then decided I wanted to switch back to not having it open as admin. To try and switch back I again ran the compatibility troubleshooter, this time I selected "try recommended settings". After doing this I am now getting the Guid error every time I open my project and I can no longer run it. I even get it if I open VS as admin like I did before. I even tried uninstalling Visual Studio and reinstalling it but that did not work either.