Error seems to occur randomly when using the Laserfiche client.

Facts:

- They do have a 1 hour session timeout cut off in the admin console but claim this can happen after a couple minutes

- The server version does match (8.3.1)

- They are using windows authentication 

- They say the only way to reconnect to Laserfiche is to reboot their PC. However when I observed the issue we were able to continue using laserfiche without even closing out just by waiting a few minutes and clicking ok on the error. 

Troubleshooting:

- Turned off Antivirus on the server, they are willing to try turning off at workstation as well if that is the issue. 
- I dont see anything in event logs that give any hints. 

- Anyone have some ideas for troubleshooting?