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Exchange Web Services - Test-OutlookWebServices 404 Errors

I've tried reaching out to the microsoft forums and have had no luck, so I am trying here. I have 2 exchange 2010 servers that i am unable to get a working EWS setup. If you want to read the article, you can at http://social.technet.microsoft.com/Forums/en-US/exchangesvrdeploy/thread/9beed320-8e5b-4768-b362-7ecffb736bd9

Clean install of RTM 2010 works when testing EWS using:
Test-WebServicesConnectivity -UseAutodiscoverForClientAccessServer

After applying SP1 RU6 or SP2, it does not work. I get:
Error : [System.Net.WebException]: The request failed with HTTP status 403: Forbidden.

After cranking up diagnostic logging in EMC, I see this in the IIS logs:
AuthError=User not allowed to access EWS;,ReportException_Message=Access is denied. Check credentials and try again.;ReportException_StackTrace=   at Microsoft.Exchange.Services.Wcf.MessageInspectorManager.AfterReceiveRequest(Message& request; IClientChannel channel; InstanceContext instanceContext)    at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.AfterReceiveRequestCore(MessageRpc& rpc)    at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage2(MessageRpc& rpc)    at System.ServiceModel.Dispatcher.MessageRpc.Process(Boolean isOperationContextSet);

Any help is appreciated.
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Jessie Gill, CISSP
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Just to try something set the iis virtual directory for Wes to anonymous.  Then see if it works if it does then we can start to figure out it is a permission issue on the virtual directory
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With Anonymous I get - 401 Unauthorized
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anuragshankar
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I think that was it. I've run everything except the -EWSApplicationAccessPolicy:$null .. I read that if -EWSAllowList was $null that everything should be good. Thank you! I have honestly spent 3 weeks on this issue. Even the microsoft boards were of no use.