12000

Google is your friend

https://www.google.com/search?client=firefox-b-1-d&q=error+12000+adobe

Hi ​@efficient_Mischief6db8 , Welcome to the Lightroom Classic Community Forum. Sorry to hear you are experiencing this issue. Let's try a few things:

• Sign Out and Re-login to Creative Cloud: Open the Creative Cloud desktop app, sign out of your account completely, restart your computer, and sign back in.

• Check for Multiple Profiles: If your email is tied to multiple Adobe profiles (like a personal ID and a work/school Enterprise ID), make sure you are selecting the correct profile with the active license.

• Check Firewall and Security Software: Temporary local firewall, antivirus, or VPN rules can block Adobe’s login endpoints. Disable your VPN or check your firewall settings to allow Adobe services.

• Test on Lightroom Web: Try logging into Lightroom via a web browser on another device or network to see if the issue is tied to your local machine or network.

• Use the Adobe Cleaner / Reinstall: If the sign-in loop persists, you may need to clear residual auth files or run the Adobe Cleaner Tool to clean up corrupted login states

If none of these steps work for you, let us know and we can continue to troubleshoot. I hope this helps! ^CH