[Samba] OT? skype, AD, folder redirection

[Christian]

Dear all,

this may be OT, but I have not found any answer to this issue elsewhere.
This is a (Samba) AD setup, debian stretch, with Louis' 4.10.5 packages.
I have Folder Redirection set up for AppData through group policy. Skype
(the desktop app) does not appear to be saving credentials in between
logins and when I move from one computer to another. Does anybody have a
clue here why it would to that? Thanks and best,

Christian