Lightroom Classic won't launch

[hughes_nz]

I can't get Lightroom Classic to launch. When I try to I get spinning wheel while the computer thinks about it for a second then nothing happens, but Lightroom Classic shows up as a Background Process in Task Manager. This only happens with Lightroom Classic, I also have Photoshop and Lightroom (not classic) and both of those work with no issue. I have tried un-installing + reinstalling including using Adobe Creative Cloud Cleaner but always with the same result (everything except Lightroom Classic works). Is anyone able to help or experienced something similar? Details below.

Creative Cloud 5.3.1.470

Lightroom Classic 10.0

Windows 10 Pro Version 20H2

[Dave26399078kkgf]

I have the same problem as descripted by hughes_nz, but the solution does not work.  I've restored my computer from a backup to before Windows 10 20H2 and Lightroom classic works fine.  Do have another suggestion?

HELP!

[Vic-86]

The only solution I have for this is to start Task Manager and end Adobe Lightroom, which for some reason is still running in spite of being closed.

Fortunately this has been happening less often.

[Dave26399078kkgf]

Thanks for the fast reply, but there is no sign of Lightroom Classic
running in the background with Task Manager.

Again, Lightroom Classic is running fine when I uninstalled the
latest window 10 update 20H2.

I've done this 4 times.

Any other ideas?

[ChevyDK]

I'm haven't the same issue for months, and only thing that is "working" for me, is to start Lr from the catalog file. 
I am wondering why Adobe has not fixed this issue yet 😞