Sometimes you just need to reset everything back to the defaults.

If you need to do that in the Visual Studio integrated development environment (IDE), it's pretty quick and easy - just let it be known that it will remove all your customizations, options, preferences, tabs, windows, etc.

The development environment executable on many machines is located in C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\Common7\IDE.

First close Visual Studio.

Then open a command prompt window (press Windows + R then type CMD in the "Run" window).

Navigate to the IDE folder as described above.

Then enter this command: devenv.exe /resetuserdata

It runs quickly but after you start Visual Studio again, it may take a minute to start as if it were the first time.