Latest Windows update causes error "7+ Taskbar Tweaker: Couldnot load library (120)"

There's no error code with the number 120. Are you sure that you provided the exact error message?

Also, please provide the tweaker version you're running and the version of your explorer.exe file, found in the C:\Windows folder.

Sorry.

Error code = Could not load library (102)

Tweaker Version = 5.7.1

explorer.exe version = 10.0.18362.387