Lightroom won't start but apears on task manager

[jjmaia]

As stated in the title, lightroom won't start, no banner or anything, but comes up on the task manager at 25% cpu...

I have restarted the computer, install and install, don't know what to do anymore...

[Rob_Cullen]

Back in 2015 when Lightroom Classic was called Lightroom-CC I experienced the Task Manager problem and fixed it as in this forum thread-

lightroom remaining

Restarting the computer would normally correct this problem, but you seem to have something different if it remains after a restart.

Yet, it might be worth trying (set Priority to high) - IF you can get Lightroom to start!

First try-  [Windows key + X] [Task Manager]  Right-click on "Adobe Photoshop Lightroom Classic", select [End Task], Restart Lightroom. Then set the 'priority' in Task Manager.

[GoldingD]

Make sure that the lock file does not exist. If lightroom was closed abnormally, the lock file might have not been deleted.

[Tony_See]

And I believe the lock file can be found (if it exists in your instance) next to the LR catalog file wherever you have stored that.

[GoldingD]

I should have included a link

Lightroom catalog cannot be opened

[jjmaia · Accepted solution]

HI All, thank you for your help.

I do have the lock file, but after I deleted it it is created again.
What I have done, I have deleted all catalog files (just files, no folders) and used the last backpuo catalog and it is working again.