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 Event ID 393 - The federation server proxy could not establish a trust with the Federation Service https://docs.microsoft.com/en-us/previous-versions/windows/it-pro/windows-server-2012-R2-and-2012/dn584107(v=ws.11)?redirectedfrom=MSDN https://social.technet.microsoft.com/Forums/windowsserver/en-US/home?forum=ADFS ISSUE: We are performing a brand new deployment of Web Application proxy role on a Windows Server 2012 R2 machine. The Application Proxy Server is in a workgroup machine, while the ADFS server is running on a domain-joined windows 2012 R2 server. For information on the installation pre-requisites and steps, I would suggest you to review the TechNet documentation available  here.   Now back to the issue,we took the PowerShell approach to install the Web application Proxy role. Install –WebapplicationProxy –certificateThumbprint <Hashvalue> FederationServicename <name of the adfsservice > When we ran this command let, we encountered the follo...

ADFS/IdS Troubleshooting and Common Problems: https://docs.microsoft.com/en-us/previous-versions/windows/it-pro/windows-server-2008-R2-and-2008/ff641685(v=ws.10)?redirectedfrom=MSDN Applies To: Active Directory Federation Services (AD FS) 2.0 Before you begin the troubleshooting process, we recommend that you first try to configure Active Directory Federation Services (AD FS) 2.0 for troubleshooting and check for known common issues that might prevent normal functioning of the Federation Service. For detailed instructions for configuring and performing related system checks, see  Configuring Computers for Troubleshooting AD FS 2.0  and  Things to Check Before Troubleshooting AD FS 2.0 . Troubleshooting trust establishment failures The following table provides troubleshooting guidance for specific error event messages or other issues that you may encounter if you are having problems with establishing trusts with AD FS 2.0. TROUBLESHOOTING TRUST EST...

To view a SAML response in Chrome These steps were tested using version 54.0.2840.87m. If you use another version, you might need to adapt the steps accordingly. Press  F12  to start the developer console. Select the  Network  tab, and then select  Preserve log . Reproduce the issue. Look for a  SAML Post  in the developer console pane. Select that row, and then view the  Headers  tab at the bottom. Look for the  SAMLResponse  attribute that contains the encoded request.

Flow Diagram with Debugging options The various steps for SSO authentication is shown in the image along with and debugging artifacts at each step in case of a failure in that step.  This table gives the details on how to identify failures at each step of SSO in the browser. The different tools and how can they help in debugging is specified as well. Step How to identify the failure in the Browser Tools/Log Configurations to look at AuthCode Request Processing by Cisco IdS In case of failure, the browser is not redirected to SAML endpoint or AD FS, a JSON error is shown by Cisco IdS, which indicates that the Client Id or Redirect URL is invalid. Cisco IdS logs- Indicates the errors which occur while the authcode request is validated and processed. Cisco IdS API metrics - Indicates the number of requests processed and failed. Client Registration SAML Request Initiation by Cisco IdS During failure, the browser is not redirected to AD FS, and an er...