Hello everyone,
Like many here I have been going round in circles over this issue for months (SP5, Windows 10 18363). I too tried adding the "Window Manager\Window Manager Group" to the "Increase scheduling priority" privilege in the Group Policy Editor- it never seemed to find this user, and adding it as a new user never helped. MS support even seemed unable to help.
So, I have finally solved this on my device by doing the following:
- Run gpedit (in the Windows search box);
- Select Local Computer Policy\Computer Configuration\Windows Settings\Security Settings;
- Click Action-> Export Policy, save on Desktop as Policy.inf;
- Open Policy.inf in Notepad:
- The “Increase scheduling priority” privilege is named “SeIncreaseBasePriorityPrivilege” in this file;
- The “Window Manager\Window Manager Group” ID is “*S-1-5-90-0” (note that it is present on “SeInteractiveLogonRight");
- Paste “, *S-1-5-90-0” after “SeIncreaseBasePriorityPrivilege";
- Save;
- Back in gpedit:
- Action-> Import Policy, import Pol.inf;
- Check “Increase scheduling priority" privileges: “Window Manager\Window Manager Group” is now listed under “Increase scheduling priority;
- Reboot;
- The pen now works in all applications without flashing.
I really hope this helps some of you trying to get this resolved!