Hi Mark2796,
Thank you for reaching Microsoft Community. I understand that you want to be able to use your Surface Pen also on your Surface Pro 6 running on Windows 11 already just like how it was in Windows 10 and yes, the Surface Pen should still work in Windows 11. We appreciate also the time and effort spent to try and troubleshoot the issue prior to posting.
May I know which Surface Pen do you have? See: Identify your Surface Pen and features (microsoft.com) for reference.
Please proceed in doing these steps first on the device and see if the issue persist:
1: Force Shutdown
Press and hold the Power button for 20 seconds
This should the hardware cache of the device
2: Run Surface Diagnostic Toolkit
See: Fix common Surface problems using the Surface Diagnostic Toolkit (microsoft.com)
3: Check for Windows Update
Go to Windows Settings > Update & Security and select Check for updates
Make sure all updates need are installed including Optional updates
4: Run System File Checker Tool and DISM commands
Open Command Prompt (Run as administrator)
Type and enter these commands below:
DISM /Online /Cleanup-Image /CheckHealth
DISM /Online /Cleanup-Image /ScanHealth
DISM /Online /Cleanup-Image /RestoreHealth
SFC /scannow
Note: Allow each command to complete its process before entering the next command line
Exit Command Prompt and restart the Surface
If in case the issue persist, proceed to these steps below to uninstall and reinstall the touchscreen and pen drivers of the device:
1. Open Device Manager
2. Click View on top and check Show hidden devices
3. Expand Human Interface Devices > HID-compliant pen > Uninstall device
Surface pen settings > Uninstall device
Surface pen integration > Uninstall device
HID-Compliant touch screen > Uninstall device
Intel (R) Precise Touch Device > Uninstall device
Surface Touch Pen Processor > Uninstall device
Note: If prompted with a checkbox stating "Delete the driver software for this device", leave it uncheck then hit Uninstall.
4. Expand Firmware > Surface touch > Uninstall device
Note: If prompted with a checkbox stating "Delete the driver software for this device", leave it uncheck then hit Uninstall.
5. Restart
6. Test the Surface Pen
Hope this helps.
Kind regards,
Marrion