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1 Message


80 Points

Thu, Feb 21, 2019 1:40 PM

Lightroom Classic: Won't start up on macOS

Hello lovely people,

Today for some reason LR CC Classic on my IMac won't work.
After opening any catalogue (even a brand new one) the wheel starts spinning and spinning and the catalogue won't open.

I tried the followings:

- Rebooting the computer
- Turning the computer on and off
- Logging out and back in of Adobe Creative 
- Uninstalling LR and reinstalling

My IMac is up to date by the way. 

Does anybody know what could be causing this? 

Thank you in advance for your time!



799 Messages


11.5K Points

2 years ago

Probably a corrupt cache or application state. Please give your Mac the "once over"! Run the free Onyx (, reboot. (In Onyx just run almost everything in the Maintenance tab, deselecting things you may not want deleted, like Launch Services . Hit the "Options" button and deselect more stuff like Cookies & Other Site Data, Browser History, Form Values, etc.), then hit Run Tasks. After it's done it will ask for a reboot.

Run Disk Warrior if you can ($120),  (, reboot. If you can’t do Disk Warrior, at least run First Aid from Disk Utility. Also just doing a "Safe Boot" can clear out caches (restart, hold down shift until you see "Safe Boot" on the screen, then reboot normally.

If that doesn’t work try launching Lightroom from your other (admin or test) account, with a new catalog, as a test. Does it run OK?  If it does it may be a corrupted preference in your Username/Library folder. Check The Lightroom Queen site for instructions on how to reset your preferences ( 

5 Messages


100 Points

2 years ago

Hi Gabri,

Did above solution provided by Carlos worked?