XGS authentication failed / Internal Server Error

Question

Hi Everyone, 
 We have been using a XGS3100 in production since March 2023 and ever since then we have been having some issues. 
 I have tried both SFOS 19.0.2 MR-2-Build472 & SFOS 19.5.1 MR-1-Build278 firmwares but the issue persists in both versions. 
 
 What happens is that after a while when the XGS3100 is running, (couple days) no one is able to authenticate via SSL-VPN and when I go to the Admin portal, I'm greeted with the "Internal Server Error" Message. 
 When I power cycle the router, everything run normally again until this issue re-appears in the next couple of days (between 2-5ish days) 
 When this issue occurs, I also tried to login via the COM port and it doesn't accept the admin password. Once I power cycle the unit, then the same password is accepted. 
 We do use AD Integration with the firewall but unsure if this is related or not. 
 Is this a bug in the firewall?

emmosophos · Answer

Hello Michael, 
 Thank you for contacting the Sophos Community. 
 I think you might be affected by NC-113034 . 
 I would recommend you to open a case with Support and share the Case ID with us so we can follow up. 
 When opening the case, please reference NC-113034 and provide the syslog.log and the time of a recent event. (E.g issue happened yesterday at 15:35 and rebooted the appliance at 15:45) 
 Regards,