Session Expired (401)

flseiler
Giga Contributor

Hello there,

 

we have periodic problems with session timeouts without a warning.

 

ServiceNow Session Expired 401.jpg

 

I already checked the sys_property for session timeout and the timeleft property:

 

Screenshot 2026-03-23 115014.png

 

The timeout happens like every 30 minutes without a warning for the timeleft.

This ist the case for onsite collegues, if I'm working from home it seems like it's the configured 3 hours.

 

What could be the cause for this issue?

 

3 REPLIES 3

Dr Atul G- LNG
Tera Patron

https://www.servicenow.com/community/developer-forum/session-expired-401-your-login-session-has-expi...

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Tanushree Maiti
Kilo Patron

Hi @flseiler 

 

ServiceNow session timeouts (401 error) without warning are often caused by browser session inactivity. It is expected behaviour.

If  you are facing issue - you can increase  gilde.ui.session_timeout   sys_properties value as per your requitrement.

 

 

Refer this KB and posts:

 

https://support.servicenow.com/kb?id=kb_article_view&sysparm_article=KB0748013

 

https://www.servicenow.com/community/itsm-forum/quot-session-expired-401-quot-after-upgrading-to-was...

 

https://www.servicenow.com/community/developer-forum/session-expired-401-your-login-session-has-expi...

 

 

Please mark this response as Helpful & Accept it as solution if it assisted you with your question.
Regards
Tanushree Maiti
ServiceNow Technical Architect
Linkedin:

Hi Tanushree,

 

the timeout in the properties ist set to 180 minutes but my collegues do get these timeout while they are working. In our helpdesk they get a timeout while activly redirecting tickets.
I don't think it is supposed like this if you are still working?

 

They also get these error in way shorter intervals than 180 minutes.

 

Regards

flseiler