PC Windows 10 home 1909 OS 18363.959. Creative cloud desktop tries to update but gets stuck at 6%, today I have tried since around over 6 hrs today, few more yesterday, and followed advice from support centre, including restarting the computer to no avail. It does not give any update errors, just hangs on without progressing.
Make sure that you have all Windows updates that are available.
The one thing that was causing it for me, believe it or not, was that I needed to do a clean installation of the latest Studio graphics driver from the NVIDIA website. After doing that and restarting, all was OK.