von C:Program Files (x86)Microsoft Group PolicyWindows 10 Version 1511PolicyDefinitions kopieren nach C:WindowsSYSVOLsysvolapotheke.localPoliciesPolicyDefinitions und überschreiben lassen
I would say your issue may be related to UNC path hardening MS15-011 and MS15-014?. It looks like Windows 10 has hardening enabled by default which is not the case with previous OS versions. As a test if you change the Local Computer Policy>Computer Configuration>Administrative Templates>Network>Network Provider>Hardened UNC Paths to Enabled and click into the Show button enter the following Values
\*NETLOGON and \*SYSVOL both with the following values RequireMutualAuthentication=0, RequireIntegrity=0?