No sounds for notification of new messages

Installing Mattermost on QNAP ver. 5.0.0.10. Windows ver. 5.1.1 Problem: There is no new message notification sound.

Hi Speyson and welcome to the Mattermost forums!

Can you try to use the app in your webbrowser and see if the notification sounds work there?

In the browser, the sounds are only there when I switch tabs

What browser in what version are you using? The desktop app heavily relies on browser components, so security settings might be related here.
So to summarize: If the tab is active in your browser, you can hear the notification sounds, but if you switch to a different tab, you cannot hear them anymore?

So to summarize: If the tab is active in your browser, you can hear the notification sounds, but if you switch to a different tab, you cannot hear them anymore?

Yes. For me the notification sounds seem “queued”. As in if I switch from a non-mattermost tab to the mattermost tab, the sound for an event that happend while I was in the other tab plays.

My Browser is Chrome 105.0.5195.102, the server is 7.1.2 (Enterprise Edition).