Photoshop will not launch

I thought I already sent a response but I don’t see it. Sorry about that. Thanks for the responses. The other day I called Adobe and spoke to a support person. I gave him control of my machine and eventually the problem was fixed. He was not good at explaining what he was doing,  even after my questions. Photoshop now works but after the call I discovered a big problem with Lightroom. I use Lightroom Classic and I think my catalog is messed up. Looks like another call to Adobe.   :-(

It could be a permissions issue.

I tried this suggestion and there was no change.

I also used the Photoshop uninstaller to remove Photoshop and then re-installed Photoshop using Creative Cloud. The uninstall and re-installed worked okay but nothing has changed.

I was hoping re-installing Photoshop would work.

Thank you.  Any more suggestions?

Try resetting the tools and/or preferences.

To restore preferences quickly using a keyboard shortcut:

Press and hold Alt+Control+Shift (Windows) or Option+Command+Shift (Mac OS) as you start Photoshop. You are prompted to delete the current settings. The new preferences files are created the next time you start Photoshop.

Note: Using the keyboard shortcut, preference files for custom shortcuts, workspaces, and color settings will also be reset to default.

https://helpx.adobe.com/photoshop/using/preferences.html#restore_preferences