Ticketing creation error : Security token missing or invalid

[Vishal]

Hey Guys,

Some of users are getting errors while creating ticket in Jira Service Management as  Security token missing or invalid while trying to creating tickets. Also, some admin users cant go to admin section as the popup for validating websudo doesn't appear.

In both the cases it works out when they clear their browser cache/cookies but this is happening quite frequently, is there any solution to this issue ?

Did anyone face something similar to this ?