Lightroom Not Opening on Mac

I am having this issue with Mac OS Monterey 12.0.1.  Creative Cloud says my lightroom is up to date, but I cannot open Lightroom

I was having the same problem. I logged into Creative Cloud and then allowed it to update. Now Lightroom is opening again!

Version 4.0 going forward are no longer compatible with 10.13.

I'm in the same boat and will

need to upgrade my Mac £££:https://helpx.adobe.com/lightroom-cc/system-requirements.html

Figured it out. I deleted Lightroom from my computer, opened Creative Cloud, and dowloaded verision 3.4 and it is now working. I think for some reason version 4.0 was getting downloaded automatically and saying it was compatable even tho it wasnt. 

Same Issue. Mac OS Sierra 10.13.6 and lightroom wont open. I see that the latest update (Version 4.0) is not compatible with High Sierra; however, Adobe recognizes this so wont let me download Version 4.0, it automatically downloads the latest compatible Version for your OS which is 3.4. Still wont open. I even backed up my computer, cleared the HD, and did a factory reset, re-dowloaded everything and still not working. If someone finds a solution please share. 

Yes I'm having the same exact issue. It was working the other day and now it's not opening. I have the same OS and latest update. Have you found a solution to this yet?