@ssorge @cundiffjm 9.1R13.1 release is scheduled for Dec 2nd (Tentative). Mostly, disconnections are due to the tunnel type and protocol (split and SSL mode), so on the VPN server side we should be able to configure full tunnel and allow ESP access only to the users who are running Windows 11 OS.
Did you confirm the known issue# for the users disconnect in your scenario?
Reference - https://kb.pulsesecure.net/articles/Pulse_Secure_Article/KB44885/?kA13Z000000L3Zj
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