[cifs-protocol] Windows 11 does not appear to apply group policies on logon when Hardened UNC paths are configured

[Kacper]

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
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.samba.org/pipermail/cifs-protocol/attachments/20251202/b2ca3262/attachment.htm>