FSLogix - Service group policy client prevents login
Fix the FSLogix 'Group Policy Client service failed the sign-in' error: find the user's SID and set RefCount to 0 under ProfileService\References.
Fix the FSLogix 'Group Policy Client service failed the sign-in' error: find the user's SID and set RefCount to 0 under ProfileService\References.
Entra (Azure AD) join fails with 8018000a, device already enrolled: a PowerShell script removes the stale enrollment, then you delete the old device.