Visual Studio - Designer process terminated unexpectedly

Question

After opening project (new or old) Visual Studio shows warning \"Designer terminated unexpectedly\" (can see in the picture below). What could cause this error? And

Answer 1

I had the same issue and found out that my Oracle VirtualBox causes the issue. My Visual Studio runs in a virtual Windows 10 enviroment.

After I disabled "Enable 3D Acceleration" in options Display, my Visual Studio Designer worked fine again.