Authentication service not working/unresponsive

This is the output of ls -lah /var/cores/:

drwxrwxrwt 2 root root 4.0K Feb 5 13:50 .
drwxr-xr-x 47 root root 4.0K Feb 5 14:18 ..
-rw------- 1 root root 132.0K Feb 5 12:40 2452ad89-b22d-4e8c-0e32ea96-b5a38505.dmp
-rw------- 1 root root 140.0K Feb 4 11:00 3156959c-0387-490d-fc318ab7-f4613e51.dmp
-rw------- 1 root root 132.3K Feb 4 14:39 8eb803d0-df55-4436-7dba7fbd-376b981b.dmp
-rw------- 1 root root 132.3K Feb 4 14:40 aaf99057-f572-479a-b6a619a7-f91c2a46.dmp
-rw------- 1 root root 132.0K Feb 4 13:54 c4f8b6d1-3100-4a36-6e8277aa-9c1c5d77.dmp
-rw------- 1 root root 16.0M Feb 5 13:50 core.access_server
-rw------- 1 root root 184.5M Feb 3 15:02 core.sasi
-rw------- 1 root root 4.4M Jul 14 2024 core.sslvpn
-rw------- 1 root root 124.0K Feb 4 10:10 e322f98d-681a-471e-fd8d58b8-1b25af76.dmp
-rw------- 1 root root 136.0K Feb 4 11:56 e4824439-0c73-4dc7-95387a86-5a2b3859.dmp
-rw------- 1 root root 140.0K Feb 5 13:48 e6485b0f-cd2f-4e4f-9c7e9098-de8af47f.dmp
-rw------- 1 root root 132.0K Feb 4 21:01 eac232e0-d964-4f4a-05fd74a5-3894f2e4.dmp

Hello PeteH ,

Could you perform the steps added in below KBA?

https://support.sophos.com/support/s/article/KBA-000009932?language=en_US

Even after performing above step if you encounter an issue. Check below command output and see if the coredump is generated for the recent date from advanced shell:

#ls -lah /var/cores/

If yes, kindly raise the support ticket to investigate it further.