How to fix cannot push policy or device settings due to the error 'Waiting for other session id(1641), username(n/a)'

This article describes how to resolve the following error that appears in the GUI when pushing policy or changing device settings: ’Waiting for other session id(1641), username(n/a)’.

Scope

FortiManager 6.X and 7.X.

Solution

Occasionally, settings cannot be pushed to the firewall due to the error ‘Waiting for other session id(1641), username(n/a)’.

Occasionally, settings cannot be pushed to the firewall due to the error 'Waiting for other session id(1641), username(n/a)'.

The issue is related to an error within the task database and the following command will fix the issue:

diagnose dvm task repair

Note: The command will reboot the FortiManager, so consider doing it during a maintenance period or off of peak hours.

If this step fails, collect the output of the following debug commands while reproducing the issue, then create a FortiCare ticket and attach the output logs to it:

diag debug app depmanager 255
diag debug app securityconsole 255
diag debug enable