We had a call where the user wasn’t able to select the default printer while in Acrobat reader DC. It did work in every other program. He was working from home and connected to his work network via VPN. When he opened Acrobat and tried to select the local printer the printer selection would automatically go back to the network printer. I disconnected the VPN and removed the network printer knowing when he connected the network again he would get it back.
Now when we tried to select the network printer in Acrobat it would jump up to the first choice of “Fax”. Different but not better. Another tech noticed it happened when ever we tried to use the Windows scroller on the side of a window it was autoscrolling.
We thought it might be the touch pad or something else wrong with Windows so we patched the Dell with new chipset, BIOS, touchpad driver, and nothing worked.
The problem was solved when we noticed there were two mice in the device manager. One was a generic “HID mouse” we removed this and everything was working.
Let us know if this helped you.