Hi Thorsten ;
I found a bug in DDDW's in PB2021 on W11. This bug was fixed in the latest MR - build 1506.
I am now working with Engineering on a new W11 PowerClient and PowerServer bug that I found related to the CAL. I have no idea yet what is causing this error but it started all of a sudden after a W11 update applied in early January 2022. Prior to that, the CAL was working OK in W11. The update seems to also affect IIS that I was using.
Note that the above W11 update also affected the TopWizWeb product as well but I have been able to resolve this issue with some IIS changes - which I relayed to Roland.
Regards .. Chris