I was trying to Implement MFA as a POC for one of our CME with the help of this Article, post I set user name in request SSO header. Tridion SsoAgentHttpModule throwing me below error

The object does not exist.

Component: SsoAgentHttpModule

Errorcode: 0 User: NT AUTHORITY\NETWORK SERVICE StackTrace Information Details: at System.DirectoryServices.Protocols.LdapConnection.ConstructResponse(Int32 messageId, LdapOperation operation, ResultAll resultType, TimeSpan requestTimeOut, Boolean exceptionOnTimeOut) at System.DirectoryServices.Protocols.LdapConnection.SendRequest(DirectoryRequest request, TimeSpan requestTimeout) at Tridion.Security.DirectoryService.GetResponse(LdapConnection connection, SearchRequest request, Int32 referralHops) at Tridion.Security.DirectoryService.GetUser(String userName) at Tridion.Security.Web.SsoAgentHttpModule.OnAuthenticateRequest(Object sender, EventArgs e)

I see there is nowhere LdapAuthenticationHttpModul enabled in below

'%TRIDION_HOME%\web\Web.config' and '%TRIDION_HOME%\webservices\Web.config', in the '/configuration/system.webServer/modules' section

Does anyone face a similar issue before?

1 Answer 1


The SSO Agent can be configured to do an LDAP lookup of the user name coming in through an HTTP header (in order to retrieve additional info about the user).

Check your SSO configuration (in the TCM MMC snap-in) whether a Directory Service has been configured (this is optional).

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