No notifications on Desktop Client 3.5.1 Windows 10

Hello,

I am running NC 23.0.4 on Linux 5.10.0-14-amd64 x86_64 with the desktop client on Windows 10 pro 21H2. I have TALK-App 13.0.5 installed.

Everything works fine except that I do not get any notifications on Talk-chat messages or calls in the desktop client and no pop-up-window.

We are using NC with about 20 users and no one gets the notifications.

Any help there for me is much appreciated.

Thanks,
Andre