Stream deck completely non-working

Do you have any add-ons in your Community folder? If yes, please remove and retest before posting.
No
Are you using Developer Mode or made changes in it?
No
Brief description of the issue:
Stream deck is not working anymore. No button presses are recognized by flight sim
Provide Screenshot(s)/video(s) of the issue encountered:

Detail steps to reproduce the issue encountered:

PC specs for those who want to assist (if not entered in your profile)

Build Version # when you first started experiencing this issue:

Are you on the Steam or Microsoft Store version?
Steam
Did you submit this to Zendesk? If so, what is your ticket #?
No

Solved it!

Was running MSFS2020 with admin rights and that somehow broke the Stream Deck software.
Solution is to either run the sim without admin rights or - you guessed it - run the Stream Deck software as admin, too.