Adobe CC thinks my Local Hard Drive is a Network Location

There is nothing, no page, no nothing about my Issue, except for an entry in the Documentation, which, unfortunately, doesn't help at all. This is one of the weirdest errors I've encountered with a program to date:

Whenever I want to install Illustrator on my new SSD, I get the error "Specified installation directory is a network location" with exit code/error code 176:

Exit Code: 176

-------------------------------------- Summary ----------------------------

• 2 fatal error(s), 0 error(s), 0 warnings(s)

FATAL: Can't install to a network location

FATAL: Error occured in install product workflow with error code 176 error message

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Though, my SSD is a local drive connected with the standard SATA3 Cables - there's no networking going on at all over there.

The only thing I could think of here is, that I had them installed on another drive which then I had to remove and that messed something up. That said, I had to manually delete all the entries in the Registry as the program (Illustrator) was still shown as Installed, but couldn't be launched as the drive was missing. I can install other products fine, I *have* changed my Temp and Program Data folders to the new Drive I got as a replacement.

How do I resolve this? Thanks in Advance!