Guys cant open PS this morning. Windows 11 working fine since upgrade weeks ago, Cannot install with

Make sure to remove all old preferences when uninstalling and then reinstalling the application. 

https://helpx.adobe.com/creative-cloud/kb/cc-cleaner-tool-installation-problems.html

warmly/j

How much RAM and spare hard disk capacity do you have?

Before uninstalling the application it might be worth trying to reset the Photoshop preferences back to the factory defaults. Normally you would do that under the General tab in preferences, but as you can't open the application, try this method:

1) Close Photoshop
2) Double click on the Photoshop icon to launch it
3) QUICKLY hold down Ctrl+Alt+Shift. (for Windows) or CTL+OPT+CMD+Shift (for Mac OS X)
4) When a dialogue appears, asking you “Delete Photoshop Preference Files?” Click Yes.
If you don't see the question repeat the procedure again.

Hi

Try using the Adobe cleaner tool to un-install/re-install

https://helpx.adobe.com/creative-cloud/kb/cc-cleaner-tool-installation-problems.html

Ged Drogheda 🙂