I have seen quite often that Windows (7 and above, maybe even since XP) creates folders with names like
4efc85e3bb644236da736f0e22bfd0 for storing files while an installation is running. Usually it also deletes these folders when the installation has been finished. But sometimes they remain at their place, maybe because the installation routine forgets to delete them or due to failures in the routine, or maybe because Antivirus software blocks access to the files/folder when it's being deleted.
These folders are sometimes created directly on
c:\, but also on my data disk
d:\ directly at root or in subdirectories, and even on my external usb drives and usb sticks if they're connected when an installation started.
Most times I have seen that it was in connection with Windows Updates. But today I have seen that it happened many times during the installation of Visual Studio 2015, too.
I would not care if deletion of these folders failed if they were put where they belong, which is in the user's TEMP folder or in the Windows TEMP folder.
Why does Windows put them on data disks and external drives?
How can I stop that behaviour?
Basically it's the same question as
which has a reply, but you couldn't call that reply an answer.