alt key not working in Photoshop

I updated Photoshop CC today to 27.8.0 and the alt key no longer functions (this may be a coincidence but it was working fine yesterday). It won’t activate the color picker for the brush tool, it won’t select an area with the clone stamp tool, etc. When I use the on-screen keyboard, the tools work correctly. The alt key on my physical keyboard works fine with other software that also uses the alt key. For the clone stamp tool I am using a file with only one layer, no selections, current layer and below, etc. I tried all the things that I could find online.

PS reset tool

PS reset preferences on quit

PS disable use graphics processor

PS disable GPU compositing

Win11 settings - Disable Windows Sticky & Filter Keys

restart computer

disable NVIDIA overlay

Any assistance would be greatly appreciated.