AD FS – Fixing error message: None of the UPNs were successful for S4U Logon call
Read OriginalThis technical article provides a detailed investigation and solution for the AD FS error 'None of the UPNs were successful for S4U Logon call' that occurs during extranet authentication via Web Application Proxy. It explains the scenario, analyzes event log errors, identifies the root cause (the AD FS service account being in the 'Protected Users Security Group'), and provides the fix to resolve the authentication failure.
0 comments
Comments
No comments yet
Be the first to share your thoughts!
Browser Extension
Get instant access to AllDevBlogs from your browser
Top of the Week
1
The Beautiful Web
Jens Oliver Meiert
•
2 votes
2
When your coding agent doesn’t understand your project, you’ll get junk
Benjamin Cane
•
1 votes
3
LLM Use in the Python Source Code
Miguel Grinberg
•
1 votes
4
Wagon’s algorithm in Python
John D. Cook
•
1 votes
5
An example conversation with Claude Code
Dumm Zeuch
•
1 votes