Your session is about to timeout

Question

I logged in with an admin account to monitor the Fortigate interface, but after 10 minutes the account automatically logged out ( if not in use ). i created a secondary account but after using it for a few months, the same error occurred again.

is there any way to guite me to fix it?

atakannatak · Answer

Hi @nmaeyama ,

If traffic or keystrokes keep the session active, the countdown is continually reset and the GUI/CLI stays open indefinitely. There is no built-in “hard” (absolute) logout timer that ends an admin session after a fixed age while it is still busy; you would have to script a manual diagnose sys admin kill if you need that behaviour.

These below documents confirm that FortiGate only enforces an idle-timeout mechanism and that valid values are 1–480 minutes; no absolute-timeout option exists.

https://docs.fortinet.com/document/fortigate/7.2.7/cli-reference/1620/config-system-global

https://docs.fortinet.com/document/fortigate/7.6.3/administration-guide/215451/setting-the-idle-timeout-time

Given the circumstances, there are two possibilities:

The admin-session process may have crashed and restarted during the timeframe you mentioned, which would explain the unexpected logout.
If you believe this is not the case, please collect the requested debug outputs and open a TAC case when you can reproduce the issue. Since the problem occurs randomly over a long interval, capturing diagnostics during an actual occurrence will be crucial.

diagnose debug admin error-log
diagnose debug application httpsd -1
diagnose debug enable

BR.

If my answer provided a solution for you, please mark the reply as solved it so that others can get it easily while searching for similar scenarios.

CCIE #68781

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