Forum Discussion
ADFS - Service Unavaible over WAP
Hi,
We have a simple ADFS enviroment with a WAP in a DMZ and an internal ADFS server. Problem is that we are not able to access the Test-Signon-Page (https://fqdn.domain.com/adfs/ls/IdpInitiatedSignon.aspx) or published OWA over the WAP. Internally everything is working fine and also from the WAP I can access the internel ADFS Server with the Test-Signon-Page and OWA with ADFS without problems.
But from the internet over the WAP we are always getting:
Through WAP we are also publishing Exchange Activesync which is working without problems.
I dont see any events in the eventlog, also with tracelogs. I don't see anything interesting in Fiddler on the client.
Do you have any ideas?
Kind regards
Patrick
1 Reply
The “Service Unavailable (HTTP 503)” error encountered when accessing Active Directory Federation Services (ADFS) endpoints through the Web Application Proxy (WAP) typically signifies a disruption in the proxy trust relationship or a misconfiguration of certificates between the WAP and the internal ADFS server. According to Microsoft’s official guidance, administrators should validate the integrity of the proxy trust, confirm accurate time synchronization across servers, and ensure that TLS/SSL certificates are correctly configured and up to date.
