Search This Blog

Saturday, July 4, 2015

Error: Unable to Establish a Trust between Proxy and Federation Service

During setup ADFS & Web Application Proxy, we encounter this error message “Unable to Establish a Trust Between Proxy and Federation Service”.

[ Setup Scenario]

Deploy ADFS 3.0 on Windows Server 2012 R2. Machine is domain joined. We have successful setup ADFS

Deploy Web Application Proxy on Windows Server 2012 R2. Machine is non domain join. Running in workgroup.

Use Azure AD Connect to configure federation

[ Resolution ]

  • Make sure enable powershell remoting on ADFS, Domain Controller, AD Connect Server and Web Application Proxy. To do, execute the following in elevated Powershell
  • Create a record on Host File (C:\Windows\System32\driver\etc\Hosts and enter

- Web Application proxy ip and server name (on ADFS Server)

- ADFS ip and server name (on Web Application Server)

  • On ADFS Server, in elevated powershell session, enter
Set-Item Wsman:\localhost\Client\TrustedHosts –Value (web application proxy server name) –Force –Concatenate


  • Use Server Manager to add Web Application proxy into All Server. Remember to select DNS tab and add Web Application Proxy Server


  • After add, right click Web Application Proxy and select Manage As and enter credential.

Now you can proceed to use Azure AD Connect to add Web Application Proxy and complete the federation configuration.



  1. This post is really informative, by using software to unblock YouTube is the best way to access any social site and specially hotspot shield is the best to use for block websites.
    eMp3World UK proxy

  2. WOW!! Very informative blog and useful article. Please visit this site if you want more detail Holborn Assets

  3. Very Interesting and wonderful information keep sharing this post kindly check
    windows 7 manager portable

  4. great post. Thanks for sharing this information.Click here

  5. This is like one app many things and its best, especially for iPhone users! Tutuapp

  6. Looking for the best site for Vidmate Download ? Vidmate Official site is the right place for you! Vidmate is the best app that lets you download videos and songs from YouTube, Facebook, Twitter, etc and various other sites.

  7. Get Likee app. Funny videos, music videos, tutorial videos and more! Share your creative videos, get followers and become a super star.

  8. Latest Version For Free Numerous individuals need to watch recordings
    like films, shows, serials, live stations and substantially more.
    Tubemate YouTube Downloader for iPhone


Note: Only a member of this blog may post a comment.