Hi 2gether

I fighting around with publishing Exchange 2010 OWA trought Server 2012 ADFS and Web Application Proxy.

I have an WAP Server joined to my domain and placed in an OPT Zone. I want to use the ADFS Preauthentification for publishing OWA in my DNS SplitScope Scenario.

After i fill in my Usercreds to login to OWA, nothing really happens.
I see that the WAP Server is requesting an kerberos ticket, but the ADFS Server is not able to send the kerberos ticket back. I read the how-to and step by step guide a thousand time...added the SPN, activated constrained delegation..but it does not work at all.

The Logs on the WAP Server are telling me:

EVENT ID 12027, Username and Password wrong (0x8007052e). But i am quiet sure the credentials are right...because EAS and the other published rules work.

On the other side the ADFS Serverlog tells me:

364:

Encountered error during federation passive request.

Additional Data

Protocol Name:

Relying Party:

Exception details:

Microsoft.IdentityServer.Web.InvalidScopeException: 06a7aa66-3aad-e311-80c1-005056983900

   at Microsoft.IdentityServer.Web.Protocols.MSISHttp.MSISHttpProtocolHandler.ValidateSignInContext(MSISHttpSignInRequestContext msisContext, WrappedHttpListenerRequest request)

   at Microsoft.IdentityServer.Web.Protocols.MSISHttp.MSISHttpProtocolHandler.CreateProtocolContext(WrappedHttpListenerRequest request)

   at Microsoft.IdentityServer.Web.PassiveProtocolListener.GetProtocolHandler(WrappedHttpListenerRequest request, ProtocolContext& protocolContext, PassiveProtocolHandler& protocolHandler)

   at Microsoft.IdentityServer.Web.PassiveProtocolListener.OnGetContext(WrappedHttpListenerContext context)

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Did anyone had this problem before? The strange thing is...i tested the whole thing before with the same components and it worked in the lab.

thx for any help