Hello,

the SSSD folks have forked SDDM into Plasma Login Manager as the new login manager in Plasma 6.6.
This is not in the allowed PAM modules list for ad_gpo_map_interactive in the sssd-ad provider.

Original bug from KDE here: https://bugs.kde.org/show_bug.cgi?id=515113

Can you add plasmalogin to the whitelisted PAM moduled for ad_gpo_map_interactive?
It's work-aroundable by:

[domain/doman_name]
ad_gpo_map_interactive = +plasmalogin

... but that's not the long term solution as ad_gpo_map_interactive already includes all other popular login managers.

Thanks!