Hi dochelp, In my testing, Windows 11 does not appear to apply Group Policy at logon when Hardened UNC Paths are configured with RequireMutualAuthentication=1 (Computer Configuration → Administrative Templates → Network → Network Provider → Hardened UNC Paths). The same configuration works without any issues on Windows 10.
It seems that access to the SYSVOL share fails during logon. Event Viewer reports error 2148073478 / Invalid Signature for the SYSVOL UNC path. Could you assist me in determining the cause of this error? Regards, Kacper
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