Hello Everyone In our Citrix environment we use Mozilla Firefox 115.0.2esr (64-Bit). Exactly after 5 minutes the VDA terminates the user session and FireFox is closed. It does not matter, the session is inactive or the user is actually browsing. The only eventlog is the following: Der Citrix Desktopdienst hat erkannt, dass eine Benutzersitzung beendet wurde. Sitzung 'XXX' für Benutzer 'Username' wurde beendet; Ursache: Logoff. The Citrix Desktop Service has detected that a user session has been terminated. Session 'XXX' for user 'Username' was terminated; cause: Logoff. I already started the Firefox with troubleshooting mode but does the same. Thank you for your help, hope someone already saw this issue