Hello Community,
I am posting here as I have created a VMware support ticket which is receiving no response after several attempts. In fact, they have pretty much ghosted us. 
We are an on-premise customer for Workspace ONE UEM (22.9.0.7) and Workspace ONE Assist.
After VMware published a security advisory I quickly moved to patch our Workspace ONE Assist environment from 22.04.00.5 to 22.10.00.12, however we seem to be unable to connect to devices. It progresses to "Sending Message" then it fails with "The connection was closed abnormally". In the event log, it has this error message:
Dec-14-2022 07:28:48.279 UTC [INFO] : X-Frame-Options : SAMEORIGIN
Dec-14-2022 07:29:20.759 UTC [INFO] : DisplayCapture.InitializeWebSocketandConnect >> Session Collaboration enabled
Dec-14-2022 07:29:20.936 UTC [INFO] : WebSocket ON CLOSE : DISCONNECT DEVICE : The connection was closed abnormally, e.g., without sending or receiving a Close control frame
Dec-14-2022 07:29:20.936 UTC [INFO] : WebSocket ON CLOSE : Reason :
Has anyone come across this error message before?
I thought it could be a firewall issue, but the ports (443, 8443) are open and even on an iOS device it shows that an Administrator would like to connect, and I can begin broadcasting the screen. But still the same error message. I can connect to the AdminWebPortal also (once enabling it). Everything seems to work except connecting to a device (Windows 10, MacOS, iOS).
We have a simple set up with a single on-premise Assist server which connects to a SQL database. Rolling back to upgrade, it works perfectly (though with security vulnerabilities). I even tried deploying Assist from scratch (without any anti-virus) , and the same issue occurs.
Any help or guidance from the VMware community will be very welcome! Thank you for reading my message.
