Portal for ArcGIS - Suddenly asking for Password Resetting

[Felipe]

Hello,

We have a High Available Portal for ArcGIS version 11.3, running on Windows 2022.
Suddenly it started asking for changing the password of the default admin account, and the IdP SAML started sending a weird message "Invalid SAML authentication request signature. Please contact your local support team".

However, when I stopped the primary node and started working with the once standby node, everything started working again. If I start again the other node and it becomes the primary, the authentication issues begin.

After removing the problematic node from the Portal, I have uninstalled and installed it again. Joined again the existing Portal and the problem started again.

Has anyone faced this problem? Any help would be much appreciated.

Thank you!
Kind regards,
Felipe

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[CodyPatterson]

Hey @Felipe 

It may be possible that one of your SAML certificates may have expired or become invalid, personally, I would request a renewed SAML Metadata file from your IT or similar and replace it with the old one. In your ArcGIS Server Manager logs are there anything there or possibly in the Portal logs?

Cody

[Felipe]

Hi @CodyPatterson 
Thank you for your answer.

Do you mean the self-signed "samlcert" certificate that we have installed by default on Portal for ArcGIS? Each node has its own saml certificate, correct?
However, uninstalling and installing again Portal for ArcGIS on this defective node, would correct this issue I guess. It makes me think that the problem is somewhere on the Operating System (Windows Server 2022)....

By the way, why the request from the Portal to reset the admin default account would be related to SAML certificate? I believe they are independents authentication system (SAML IdP, ArcGIS Built-in account)

Unfortunately I don't find anything relevant on the logs.

Thank you for your help!
Felipe