Hello
We have Exchange 2013 w/ CU8 and everything patched up from Windows update.
Recently our PCI scanner has required that TLS 1.0 not be used to pass compliance. So using Qualys IIS Crypto I used the PCI template and unchecked TLS 1.0. Restart the server. After restart I can get to OWA/ECP login screen just fine. It shows it is using
TLS 1.2. However if I login it I get a blank page.
If I try Outlook 2013 it will not load the profile. If I try to test the AutoConfiguration I get unable to determine settings.
If I go back recheck TLS 1.0 and reboot, everything works fine again.
There seems to be no errors in the event logs related to this. If I go into the HttpPrpxy log I see:
2015-05-02T20:28:34.695Z,3d4032db-5e41-471d-8b7d-8e9d428400bf,15,0,1076,0,,Ecp,mail1.XXXXXX.net,/ecp/,,FBA,true,
XXXXXX\Administrator,,ServerVersion~Version 15.0 (Build 0.0),Mozilla/5.0 (Windows NT 6.1; WOW64; Trident/7.0; rv:11.0)
like Gecko,10.100.100.155,MAIL1,503,SendFailure,SendFailure,GET,Proxy,mail1.XXXXXX.net,15.00.1076.000,IntraForest,ExchClientVer-UrlQuery,,,,
0,,1,,25,0,,0,,0,,0,0,,0,39,0,,,,5,1,,,0,1,13,1,7,8,9,34,39,,?ExchClientVer=15,,BeginRequest=2015-05-02T20:28:34.664Z;CorrelationID=<empty>;P
roxyState-Run=None;FEAuth=BEVersion-1941996596;NewConnection=::1&0;BeginGetResponse=2015-05-02T20:28:34.695Z;NewConnection=10.100.100.230&0;
OnResponseReady=2015-05-02T20:28:34.695Z;EndGetResponse=2015-05-02T20:28:34.695Z;ProxyState-Complete=WaitForServerResponse;EndRequest=2015-05-02T20:28:34.695Z;,
WebExceptionStatus=SendFailure;WebException=System.Net.WebException: The underlying connection was closed: An unexpected error occurred on a send. --->
System.IO.IOException: Unable to read data from the transport connection: An existing connection was forcibly closed by the remote host. --->
System.Net.Sockets.SocketException: An existing connection was forcibly closed by the remote host at System.Net.Sockets.NetworkStream.EndRead(IAsyncResult asyncResult) ---
End of inner exception stack trace --- at System.Net.TlsStream.EndWrite(IAsyncResult asyncResult) at System.Net.ConnectStream.WriteHeadersCallback(IAsyncResult ar) ---
End of inner exception stack trace --- at System.Net.HttpWebRequest.EndGetResponse(IAsyncResult asyncResult)
at Microsoft.Exchange.HttpProxy.ProxyRequestHandler.<>c__DisplayClass2c.<OnResponseReady>b__2b();
Any help would be great.