Does anyone have a problem with security tokens missing or invalid?

[Bernice_Narvaez]

We don't have a proxy or load balancer.  We set the session timeout to 900.  We are receiving the message:  "Error: The security token was missing or invalid.  Try refreshing the page".  This is with a simple custom form that was created and is accessed on the Help Center Page. When the page is refreshed, the data disappears.  When the data is reentered, the problem reoccurs.

[Yogesh Mude]

@Bernice_Narvaez  Did this problem, one of my team member is facing the same problem on cloud.

[Sierra]

We are on the cloud and one of our portal users got this error message when trying to submit a ticket by filling out a form. Tried another form received "Couldn't send request The security token was missing or invalid.  Try refreshing the page"

[hyojoon choi]

hi @Bernice_Narvaez 

Did you solve this problem?

[Pramodh M]

Hi @Bernice_Narvaez 

Can you please check if the Base URL matches the Portal link you are trying to access?

Can you try full re-indexing the instance?

Let me know if this works

Thanks