Created attachment 8986 [details]
Initial Windows 10 login

Reproducible.
Initial login from a student "schueler02".
Error message as seen in the screenshot.
If the user already was logged in on a windows 7 machine it works.
UCS seems to create only "default.V2-5" by default:
default  default.V2  default.V3  default.V4  default.V5  Vista  Vista.V2  Win2k  Win2K3  Win95  WinNT  WinXP
Not the necessary "default.V6" directory.
The Windows 10 client seems to create the dir:
schueler/schueler02/windows-profiles# getfacl default.V[56]":

# file: default.V5
# owner: schueler02
# group: Domain\040Users\040e915
user::rwx
group::---
other::---

# file: default.V6
# owner: schueler02
# group: Domain\040Users\040e915
user::rwx
user:schueler02:rwx
user:5035:rwx
group::---
group:System:rwx
group:Domain\040Users\040e915:---
mask::rwx
other::---
default:user::rwx
default:user:schueler02:rwx
default:user:5035:rwx
default:group::---
default:group:System:rwx
default:group:Domain\040Users\040e915:---
default:mask::rwx
default:other::---