Empty locked folders continuously created on drive..?

I have most of my games & Steam on this particular SSD & every time I access the drive to add a mod etc there is always at least 50 empty locked .tmp folders (lost count of the number of times I've deleted them) they are all variously named but all start with MSI.. what are they & how can I prevent them from being continuously created..?

Thanks.

MSI files usually come from the Windows installer. Are you installing anything - even updates to programs or the system.

Originally Posted by whs

MSI files usually come from the Windows installer. Are you installing anything - even updates to programs or the system.

Nope, no installs or updates..

Maybe your games use the installer to pull stuff in. But I am only guessing. I never use any games.