Hi,
Press Ctrl+Alt+Del, select Task Manager > Files > Run a task > check the option as administrator > type CMD > run the commands: sfc /scannow and dism /online /cleanup-image /restorehealth, wait for the process to finish and restart the computer.
After restarting, access regedit using the same method I showed, go to the Computer tab\HKEY_CLASSES_ROOT\Inkfile, take a screenshot and post it here.
Thanks