Lightroom Classic Shows up in Task Manager but won't open

[apf102]

Hi,

Long time (frustrated) user of Lightroom Classic. I have been havign sync issues between LR Classic and the Cloud again. I often upload photos via LR for iPad then later sync these raw images to my PC. Anyway, I updated to the latest version and my sync stopped working. I left it several hours. In the end I decided to close LR Classic and restart before trying again.

Now when I go to launch LR Classic, nothing happens. No splash screen. No icon. Nothing. The only thing I can see is that the task manager has an entry for LR Classic which is using 25% CPU and anywhere from 2 to 11 GB of RAM.

I have tried:

Alt Shift and resetting preferences.

Using a backup file to load from

Removing the lock file

Removing the whole catalogue

Loading an older catalogue (this says I need to upgrade the catalogue but crashes on that screen)

Nothing seems to work. Once again I am paying through the nose for a product which constantly fails me! Any assistance much appreciated.

[GoldingD]

For a diagnostic, use a different user account to log into your computer, typically the Admin account. Then see if LrC will start.

If so, a user account issue may be the problem. Been more than a bit of that occuring recently.

[apf102]

Ok. So I can load Lightroom in the admin account and can open the backup of my main Lightroom file. Next question is what has happened to my account then? 

[GoldingD]

See:

Troubleshoot unexpected behavior in specific user account | Adobe

• For MACOS users the MAS solution #3 has been helpful
• For Windows, # 4 has been helpful
• but that is not absolute, so the other solutions may or may not be what is happening.

and, perhaps

Basic troubleshooting steps to fix issues in Lightroom Classic | Adobe