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FelData
Copper Contributor
Feb 07, 2024

Troubleshooting UPN Authentication Issues in Remote Server Gateway

Hello everyone,

I'm a system administrator currently facing an issue with UPN authentication on our Remote Server Gateway. I'm seeking advice or suggestions to resolve this problem.

Here's a brief overview of the situation:

Internally (at work), authentication using sAMAccountName and Kerberos works with no issues. However, with our Remote Server Gateway, UPN authentication consistently fails, while sAMAccountName works.

Steps Taken:

  1. Adjusted user accounts, including adding them to global and forest admin groups.
  2. Checked DNS configurations, which seem to be correct.
  3. Reviewed group policies and found no restrictive settings affecting UPN authentication.
  4. Encountered some general event errors related to the failed connections, but they don't provide usable information.

My concern is to understand how it could work. Is it possible that Kerberos or NTLM configurations are affecting UPN authentication on the Remote Server Gateway? If so, how can these settings be diagnosed and adjusted?

Has anyone faced similar UPN authentication issues with Remote Server Gateways, but working with sAMAccount? Any solutions or advice would be valuable

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