How to restart Sophos Firewall Web Admin GUI

It may happen that the admin web interface is no longer accessible and only the message is displayed instead:

Internal Error

In our experience, this often happens when there are multiple admins on the firewall or you challenge packet capture.

In this case, you don’t have to boot the firewall itself and just restart the web server service, if you can connect to the firewall console (Advanced Shell) via SSH. The commands are as follows:

service tomcat:restart -ds nosync
service apache:restart -ds nosync