XG always logout users randomly

Same issue here. Nothing but headaches since we started using these firewalls. Really sad. I used Sophos UTM's at a previous job and they were solid. Seems like they've just gotten careless and sloppy over the last few years. XG is riddled with bugs.

Did you get this resolved? 

I've had a similar problem and have just changed some settings, this article may help. If you have fixed the problem and this article was not the answer please let me know what you did. 

https://community.sophos.com/kb/en-us/125468 

Thank you

Yes that article is what support ended up recommending to me. It's not a solution, but a half-ass workaround. The major problem with it is that the setting gets lost every time you update the firewall. So any time you update you have to remember to go back in and do it again.

My STAS installation runs smoothly. 

Try: 

And most important: Check out the WMI Settings + set the correct GPO.

https://community.sophos.com/kb/en-us/123020

And furthermore Test it! 

Step 3: Verify WMI using command line

If the test via CMD does not work, something in your ENV is not correct and STAS will log out the users. If you see a strange behavior of STAS, first test the WMI. Do not just try the WMI port, verify the log in and try to get the User credentials via WMIc 

My STAS installation runs smoothly. 

Try: 

And most important: Check out the WMI Settings + set the correct GPO.

https://community.sophos.com/kb/en-us/123020

And furthermore Test it! 

Step 3: Verify WMI using command line

If the test via CMD does not work, something in your ENV is not correct and STAS will log out the users. If you see a strange behavior of STAS, first test the WMI. Do not just try the WMI port, verify the log in and try to get the User credentials via WMIc