I installed Exchange 2013 on 2 brand new Server 2012 virtual machines, one with the mailbox role and another with the CAS roles. The installation completed without errors but I cannot log on to the ECP (or OWA for that matter). As I enter my user/pass, the password field goes blank and a number of event log entries are added (see below). I'm using the default administrator account (also Enterprise Admin, Domain Admin and member of the Organization Management security groups). I mail-enabled the account with enable-mailuser + enable-mailbox. I can execute Exchange Powershell cmdlets when logged on with this account, so security looks good. The problem is OWA/ECP which consistenly logs the following errors when I attempt to access the OWA: [Ecp] An internal server error occurred. The unhandled exception was: System.Security.Cryptography.CryptographicException: Invalid provider type specified. at System.Security.Cryptography.Utils.CreateProvHandle(CspParameters parameters, Boolean randomKeyContainer) at System.Security.Cryptography.Utils.GetKeyPairHelper(CspAlgorithmType keyType, CspParameters parameters, Boolean randomKeyContainer, Int32 dwKeySize, SafeProvHandle& safeProvHandle, SafeKeyHandle& safeKeyHandle) at System.Security.Cryptography.RSACryptoServiceProvider.GetKeyPair() at System.Security.Cryptography.X509Certificates.X509Certificate2.get_PrivateKey() at Microsoft.Exchange.HttpProxy.FbaModule.ParseCadataCookies(HttpApplication httpApplication) at Microsoft.Exchange.HttpProxy.FbaModule.OnBeginRequestInternal(HttpApplication httpApplication) at Microsoft.Exchange.HttpProxy.ProxyModule.<>c__DisplayClassa.<OnBeginRequest>b__9() at Microsoft.Exchange.Common.IL.ILUtil.DoTryFilterCatch(TryDelegate tryDelegate, FilterDelegate filterDelegate, CatchDelegate catchDelegate) --------------------------------------------------------------------- [Owa] An internal server error occurred. The unhandled exception was: System.Security.Cryptography.CryptographicException: Invalid provider type specified. at System.Security.Cryptography.Utils.CreateProvHandle(CspParameters parameters, Boolean randomKeyContainer) at System.Security.Cryptography.Utils.GetKeyPairHelper(CspAlgorithmType keyType, CspParameters parameters, Boolean randomKeyContainer, Int32 dwKeySize, SafeProvHandle& safeProvHandle, SafeKeyHandle& safeKeyHandle) at System.Security.Cryptography.RSACryptoServiceProvider.GetKeyPair() at System.Security.Cryptography.X509Certificates.X509Certificate2.get_PrivateKey() at Microsoft.Exchange.HttpProxy.FbaModule.ParseCadataCookies(HttpApplication httpApplication) at Microsoft.Exchange.HttpProxy.FbaModule.OnBeginRequestInternal(HttpApplication httpApplication) at Microsoft.Exchange.HttpProxy.ProxyModule.<>c__DisplayClassa.<OnBeginRequest>b__9() at Microsoft.Exchange.Common.IL.ILUtil.DoTryFilterCatch(TryDelegate tryDelegate, FilterDelegate filterDelegate, CatchDelegate catchDelegate) --------------------------------------------------------------------------- Event code: 3005 Event message: An unhandled exception has occurred. Event time: 28/11/2012 0:47:38 Event time (UTC): 27/11/2012 23:47:38 Event ID: 12c0aac14e0c45b093e860f6699b0d76 Event sequence: 4 Event occurrence: 3 Event detail code: 0 Application information: Application domain: /LM/W3SVC/1/ROOT/Rpc-2-129985330412727995 Trust level: Full Application Virtual Path: /Rpc Application Path: C:\Program Files\Microsoft\Exchange Server\V15\FrontEnd\HttpProxy\rpc\ Machine name: <cleaned up> Process information: Process ID: 4848 Process name: w3wp.exe Account name: NT AUTHORITY\SYSTEM Exception information: Exception type: HttpException Exception message: The client disconnected. at Microsoft.Exchange.HttpProxy.ProxyRequestHandler.EndProcessRequest(IAsyncResult result) at System.Web.HttpApplication.CallHandlerExecutionStep.OnAsyncHandlerCompletion(IAsyncResult ar) Request information: Request URL: http://<cleaned up>/rpc/rpcproxy.dll?688b9c54-fc83-47a6-bf82-343799d288d5@falcora.net:6001 Request path: /rpc/rpcproxy.dll User host address: fe80::d58e:d780:34ed:af68C:\Program Files\Microsoft\Exchange Server\V15\FrontEnd\HttpProxy\rpc\ User: FALCORA\SM_29bd07d0480e4b41a Is authenticated: True Authentication Type: NTLM Thread account name: NT AUTHORITY\SYSTEM Thread information: Thread ID: 18 Thread account name: NT AUTHORITY\SYSTEM Is impersonating: False Stack trace: at Microsoft.Exchange.HttpProxy.ProxyRequestHandler.EndProcessRequest(IAsyncResult result) at System.Web.HttpApplication.CallHandlerExecutionStep.OnAsyncHandlerCompletion(IAsyncResult ar) I have spent hours wading through log files and posts, and cannot get my head around this one.

Hi Simon, I am trying this on the CAS server. Per your email I attempted the same on the mailbox server using https://localhost:444/ecp which provides me with access to the user settings part of the ECP but I cannot access any of the server admin menus. Here is the part of the IIS log file for the CAS server: <quote>2012-11-28 12:07:02 192.168.248.78 POST /owa/auth.owa - 443 domainname\administrator 192.168.0.70 Mozilla/5.0+(compatible;+MSIE+10.0;+Windows+NT+6.2;+WOW64;+Trident/6.0) https://bezoesw078.domainname.net/owa/auth/logon.aspx?replaceCurrent=1&url=https%3a%2f%2fbezoesw078.domainname.net%2fecp 302 0 0 31 2012-11-28 12:07:02 192.168.248.78 GET /ecp - 443 - 192.168.0.70 Mozilla/5.0+(compatible;+MSIE+10.0;+Windows+NT+6.2;+WOW64;+Trident/6.0) https://bezoesw078.domainname.net/owa/auth/logon.aspx?replaceCurrent=1&url=https%3a%2f%2fbezoesw078.domainname.net%2fecp 302 0 0 15 2012-11-28 12:07:02 192.168.248.78 GET /owa/auth/logon.aspx url=https%3a%2f%2fbezoesw078.domainname.net%2fecp&reason=0 443 - 192.168.0.70 Mozilla/5.0+(compatible;+MSIE+10.0;+Windows+NT+6.2;+WOW64;+Trident/6.0) https://bezoesw078.domainname.net/owa/auth/logon.aspx?replaceCurrent=1&url=https%3a%2f%2fbezoesw078.domainname.net%2fecp 200 0 0 0 2012-11-28 12:07:02 192.168.248.78 GET /owa/auth/logon.aspx replaceCurrent=1&url=https%3a%2f%2fbezoesw078.domainname.net%2fecp 443 - 192.168.0.70 Mozilla/5.0+(compatible;+MSIE+10.0;+Windows+NT+6.2;+WOW64;+Trident/6.0) - 200 0 0 0 2012-11-28 12:07:04 fe80::d58e:d780:34ed:af68%12 POST /powershell PSVersion=3.0&sessionID=Version_15.0_(Build_515.0)=rJqNiZqNgb26pbC6rKjPyMjRmZ6TnJCNntGRmouBzsbLzsbGyc/MyYHNx9DOztDNz87N387Nxc7Kxc/L 80 - fe80::d58e:d780:34ed:af68%12 Microsoft+WinRM+Client - 200 0 0 0 2012-11-28 12:07:04 fe80::d58e:d780:34ed:af68%12 POST /powershell PSVersion=3.0&sessionID=Version_15.0_(Build_515.0)=rJqNiZqNgb26pbC6rKjPyMjRmZ6TnJCNntGRmouBzsbLzsbGyc/MyYHNx9DOztDNz87N387Nxc7Kxc/L 80 domainname\SM_29bd07d0480e4b41a fe80::d58e:d780:34ed:af68%12 Microsoft+WinRM+Client - 200 0 0 46 2012-11-28 12:07:04 fe80::d58e:d780:34ed:af68%12 POST /powershell PSVersion=3.0&sessionID=Version_15.0_(Build_515.0)=rJqNiZqNgb26pbC6rKjPyMjRmZ6TnJCNntGRmouBzsbLzsbGyc/MyYHNx9DOztDNz87N387Nxc7Ixc/L 80 - fe80::d58e:d780:34ed:af68%12 Microsoft+WinRM+Client - 200 0 0 0 2012-11-28 12:07:04 fe80::d58e:d780:34ed:af68%12 POST /powershell PSVersion=3.0&sessionID=Version_15.0_(Build_515.0)=rJqNiZqNgb26pbC6rKjPyMjRmZ6TnJCNntGRmouBzsbLzsbGyc/MyYHNx9DOztDNz87N387Nxc7Ixc/L 80 domainname\SM_29bd07d0480e4b41a fe80::d58e:d780:34ed:af68%12 Microsoft+WinRM+Client - 200 0 0 156 2012-11-28 12:07:04 fe80::d58e:d780:34ed:af68%12 POST /powershell PSVersion=3.0&sessionID=Version_15.0_(Build_515.0)=rJqNiZqNgb26pbC6rKjPyMjRmZ6TnJCNntGRmouBzsbLzsbGyc/MyYHNx9DOztDNz87N387Nxc7Ixc/L 80 domainname\SM_29bd07d0480e4b41a fe80::d58e:d780:34ed:af68%12 Microsoft+WinRM+Client - 200 0 0 15 2012-11-28 12:07:04 fe80::d58e:d780:34ed:af68%12 POST /powershell PSVersion=3.0&sessionID=Version_15.0_(Build_515.0)=rJqNiZqNgb26pbC6rKjPyMjRmZ6TnJCNntGRmouBzsbLzsbGyc/MyYHNx9DOztDNz87N387Nxc7Ixc/L 80 domainname\SM_29bd07d0480e4b41a fe80::d58e:d780:34ed:af68%12 Microsoft+WinRM+Client - 200 0 0 31 2012-11-28 12:07:04 fe80::d58e:d780:34ed:af68%12 POST /powershell PSVersion=3.0&sessionID=Version_15.0_(Build_515.0)=rJqNiZqNgb26pbC6rKjPyMjRmZ6TnJCNntGRmouBzsbLzsbGyc/MyYHNx9DOztDNz87N387Nxc7Ixc/K 80 - fe80::d58e:d780:34ed:af68%12 Microsoft+WinRM+Client - 200 0 0 0 2012-11-28 12:07:04 fe80::d58e:d780:34ed:af68%12 POST /powershell PSVersion=3.0&sessionID=Version_15.0_(Build_515.0)=rJqNiZqNgb26pbC6rKjPyMjRmZ6TnJCNntGRmouBzsbLzsbGyc/MyYHNx9DOztDNz87N387Nxc7Ixc/K 80 domainname\SM_29bd07d0480e4b41a fe80::d58e:d780:34ed:af68%12 Microsoft+WinRM+Client - 200 0 0 31 2012-11-28 12:07:04 fe80::d58e:d780:34ed:af68%12 POST /powershell PSVersion=3.0&sessionID=Version_15.0_(Build_515.0)=rJqNiZqNgb26pbC6rKjPyMjRmZ6TnJCNntGRmouBzsbLzsbGyc/MyYHNx9DOztDNz87N387Nxc7Ixc/K 80 domainname\SM_29bd07d0480e4b41a fe80::d58e:d780:34ed:af68%12 Microsoft+WinRM+Client - 200 0 0 15 2012-11-28 12:07:04 fe80::d58e:d780:34ed:af68%12 POST /powershell PSVersion=3.0&sessionID=Version_15.0_(Build_515.0)=rJqNiZqNgb26pbC6rKjPyMjRmZ6TnJCNntGRmouBzsbLzsbGyc/MyYHNx9DOztDNz87N387Nxc7Ixc/L 80 domainname\SM_29bd07d0480e4b41a fe80::d58e:d780:34ed:af68%12 Microsoft+WinRM+Client - 500 0 64 93 2012-11-28 12:07:04 fe80::d58e:d780:34ed:af68%12 POST /powershell PSVersion=3.0&sessionID=Version_15.0_(Build_515.0)=rJqNiZqNgb26pbC6rKjPyMjRmZ6TnJCNntGRmouBzsbLzsbGyc/MyYHNx9DOztDNz87N387Nxc7Ixc/K 80 domainname\SM_29bd07d0480e4b41a fe80::d58e:d780:34ed:af68%12 Microsoft+WinRM+Client - 200 0 0 15 2012-11-28 12:07:06 ::1 GET /OWA/Calendar/resource - 443 - ::1 AMProbe/Local/ClientAccess - 200 0 0 0 2012-11-28 12:07:10 192.168.248.78 POST /owa/auth.owa - 443 domainname\administrator 192.168.0.70 Mozilla/5.0+(compatible;+MSIE+10.0;+Windows+NT+6.2;+WOW64;+Trident/6.0) https://bezoesw078.domainname.net/owa/auth/logon.aspx?replaceCurrent=1&url=https%3a%2f%2fbezoesw078.domainname.net%2fecp 302 0 0 0 2012-11-28 12:07:10 192.168.248.78 GET /ecp - 443 - 192.168.0.70 Mozilla/5.0+(compatible;+MSIE+10.0;+Windows+NT+6.2;+WOW64;+Trident/6.0) https://bezoesw078.domainname.net/owa/auth/logon.aspx?replaceCurrent=1&url=https%3a%2f%2fbezoesw078.domainname.net%2fecp 302 0 0 15 2012-11-28 12:07:10 192.168.248.78 GET /owa/auth/logon.aspx url=https%3a%2f%2fbezoesw078.domainname.net%2fecp&reason=0 443 - 192.168.0.70 Mozilla/5.0+(compatible;+MSIE+10.0;+Windows+NT+6.2;+WOW64;+Trident/6.0) https://bezoesw078.domainname.net/owa/auth/logon.aspx?replaceCurrent=1&url=https%3a%2f%2fbezoesw078.domainname.net%2fecp 200 0 0 0 2012-11-28 12:07:10 192.168.248.78 GET /owa/auth/logon.aspx replaceCurrent=1&url=https%3a%2f%2fbezoesw078.domainname.net%2fecp 443 - 192.168.0.70 Mozilla/5.0+(compatible;+MSIE+10.0;+Windows+NT+6.2;+WOW64;+Trident/6.0) - 200 0 0 0 2012-11-28 12:07:15 ::1 GET /ecp/ReportingWebService/ - 443 - ::1 AMProbe/Local/ClientAccess - 302 0 0 0 2012-11-28 12:07:15 ::1 GET /OAB/ - 443 domainname\SM_29bd07d0480e4b41a ::1 AMProbe/Local/ClientAccess - 200 0 0 15 2012-11-28 12:07:23 192.168.248.78 POST /owa/auth.owa - 443 administrator@domainname.net 192.168.0.70 Mozilla/5.0+(compatible;+MSIE+10.0;+Windows+NT+6.2;+WOW64;+Trident/6.0) https://bezoesw078.domainname.net/owa/auth/logon.aspx?replaceCurrent=1&url=https%3a%2f%2fbezoesw078.domainname.net%2fecp 302 0 64 46 2012-11-28 12:07:23 192.168.248.78 POST /owa/auth.owa - 443 administrator@domainname.net 192.168.0.70 Mozilla/5.0+(compatible;+MSIE+10.0;+Windows+NT+6.2;+WOW64;+Trident/6.0) https://bezoesw078.domainname.net/owa/auth/logon.aspx?replaceCurrent=1&url=https%3a%2f%2fbezoesw078.domainname.net%2fecp 302 0 0 47 2012-11-28 12:07:23 192.168.248.78 GET /ecp - 443 - 192.168.0.70 Mozilla/5.0+(compatible;+MSIE+10.0;+Windows+NT+6.2;+WOW64;+Trident/6.0) https://bezoesw078.domainname.net/owa/auth/logon.aspx?replaceCurrent=1&url=https%3a%2f%2fbezoesw078.domainname.net%2fecp 302 0 0 0 2012-11-28 12:07:23 192.168.248.78 GET /owa/auth/logon.aspx url=https%3a%2f%2fbezoesw078.domainname.net%2fecp&reason=0 443 - 192.168.0.70 Mozilla/5.0+(compatible;+MSIE+10.0;+Windows+NT+6.2;+WOW64;+Trident/6.0) https://bezoesw078.domainname.net/owa/auth/logon.aspx?replaceCurrent=1&url=https%3a%2f%2fbezoesw078.domainname.net%2fecp 200 0 0 0 2012-11-28 12:07:23 192.168.248.78 GET /owa/auth/logon.aspx replaceCurrent=1&url=https%3a%2f%2fbezoesw078.domainname.net%2fecp 443 - 192.168.0.70 Mozilla/5.0+(compatible;+MSIE+10.0;+Windows+NT+6.2;+WOW64;+Trident/6.0) - 200 0 0 0 2012-11-28 12:07:31 ::1 GET /PowerShell/ - 443 - ::1 AMProbe/Local/ClientAccess - 401 111 0 15 2012-11-28 12:07:31 ::1 GET /PowerShell/ - 443 - ::1 AMProbe/Local/ClientAccess - 401 111 0 0 2012-11-28 12:07:35 ::1 GET /Microsoft-Server-ActiveSync/default.eas - 443 HealthMailbox05cc5165625d48ed9b2a389c9a93bddf@domainname.net ::1 AMProbe/Local/ClientAccess - 200 0 0 0 2012-11-28 12:07:35 ::1 RPC_IN_DATA /RPC/rpcproxy.dll &RequestId=39c4a41e-a1b7-4b14-950f-613c00003c21 443 domainname\SM_29bd07d0480e4b41a ::1 AMProbe/Local/ClientAccess - 200 0 0 4764 2012-11-28 12:07:37 ::1 GET /AutoDiscover/ - 443 domainname\SM_29bd07d0480e4b41a ::1 AMProbe/Local/ClientAccess - 200 0 0 0 2012-11-28 12:07:40 ::1 POST /OWA/auth.owa - 443 HealthMailbox05cc5165625d48ed9b2a389c9a93bddf@domainname.net ::1 AMProbe/Local/ClientAccess - 302 0 0 0 2012-11-28 12:07:45 ::1 OPTIONS /Microsoft-Server-ActiveSync/default.eas - 443 HealthMailbox05cc5165625d48ed9b2a389c9a93bddf@domainname.net ::1 TestActiveSyncConnectivity - 200 0 0 31 2012-11-28 12:07:45 ::1 POST /Microsoft-Server-ActiveSync/default.eas Cmd=Settings&User=HealthMailbox05cc5165625d48ed9b2a389c9a93bddf@domainname.net&DeviceId=EASProbeDeviceId140&DeviceType=EASProbeDeviceType 443 HealthMailbox05cc5165625d48ed9b2a389c9a93bddf@domainname.net ::1 TestActiveSyncConnectivity - 200 0 0 31 2012-11-28 12:07:46 192.168.248.78 POST /owa/auth.owa - 443 domainname\rvantigchelt 192.168.0.70 Mozilla/5.0+(compatible;+MSIE+10.0;+Windows+NT+6.2;+WOW64;+Trident/6.0) https://bezoesw078.domainname.net/owa/auth/logon.aspx?replaceCurrent=1&url=https%3a%2f%2fbezoesw078.domainname.net%2fecp 302 0 0 156 2012-11-28 12:07:46 192.168.248.78 GET /ecp - 443 - 192.168.0.70 Mozilla/5.0+(compatible;+MSIE+10.0;+Windows+NT+6.2;+WOW64;+Trident/6.0) https://bezoesw078.domainname.net/owa/auth/logon.aspx?replaceCurrent=1&url=https%3a%2f%2fbezoesw078.domainname.net%2fecp 302 0 0 0 2012-11-28 12:07:46 192.168.248.78 GET /owa/auth/logon.aspx url=https%3a%2f%2fbezoesw078.domainname.net%2fecp&reason=0 443 - 192.168.0.70 Mozilla/5.0+(compatible;+MSIE+10.0;+Windows+NT+6.2;+WOW64;+Trident/6.0) https://bezoesw078.domainname.net/owa/auth/logon.aspx?replaceCurrent=1&url=https%3a%2f%2fbezoesw078.domainname.net%2fecp 200 0 0 0 2012-11-28 12:07:46 192.168.248.78 GET /owa/auth/logon.aspx replaceCurrent=1&url=https%3a%2f%2fbezoesw078.domainname.net%2fecp 443 - 192.168.0.70 Mozilla/5.0+(compatible;+MSIE+10.0;+Windows+NT+6.2;+WOW64;+Trident/6.0) - 200 0 0 15 2012-11-28 12:07:48 ::1 GET /ecp/ - 443 - ::1 AMProbe/Local/ClientAccess - 302 0 0 0 2012-11-28 12:07:52 ::1 GET /owa/ - 443 - ::1 Mozilla/4.0+(compatible;+MSIE+9.0;+Windows+NT+6.1;+MSEXCHMON;+ACTIVEMONITORING;+OWACTP) - 302 0 0 0 2012-11-28 12:07:52 ::1 GET /owa/auth/logon.aspx url=https%3a%2f%2flocalhost%2fowa%2f&reason=0 443 - ::1 Mozilla/4.0+(compatible;+MSIE+9.0;+Windows+NT+6.1;+MSEXCHMON;+ACTIVEMONITORING;+OWACTP) - 200 0 0 0 2012-11-28 12:07:52 ::1 GET /owa/ - 443 - ::1 Mozilla/4.0+(compatible;+MSIE+9.0;+Windows+NT+6.1;+MSEXCHMON;+ACTIVEMONITORING;+OWACTP) - 302 0 0 0 2012-11-28 12:07:52 ::1 GET /owa/auth/logon.aspx url=https%3a%2f%2flocalhost%2fowa%2f&reason=0 443 - ::1 Mozilla/4.0+(compatible;+MSIE+9.0;+Windows+NT+6.1;+MSEXCHMON;+ACTIVEMONITORING;+OWACTP) - 200 0 0 0 2012-11-28 12:07:52 ::1 GET /owa/auth/logon.aspx replaceCurrent=1&url=https%3a%2f%2flocalhost%2fowa%2f 443 - ::1 Mozilla/4.0+(compatible;+MSIE+9.0;+Windows+NT+6.1;+MSEXCHMON;+ACTIVEMONITORING;+OWACTP) - 200 0 0 15 2012-11-28 12:07:52 ::1 GET /owa/auth/15.0.516/scripts/premium/flogon.js - 443 - ::1 Mozilla/4.0+(compatible;+MSIE+9.0;+Windows+NT+6.1;+MSEXCHMON;+ACTIVEMONITORING;+OWACTP) - 200 0 0 0 2012-11-28 12:07:52 ::1 POST /owa/auth.owa - 443 HealthMailbox05cc5165625d48ed9b2a389c9a93bddf@domainname.net ::1 Mozilla/4.0+(compatible;+MSIE+9.0;+Windows+NT+6.1;+MSEXCHMON;+ACTIVEMONITORING;+OWACTP) - 302 0 0 15 2012-11-28 12:07:52 ::1 GET /owa/ - 443 - ::1 Mozilla/4.0+(compatible;+MSIE+9.0;+Windows+NT+6.1;+MSEXCHMON;+ACTIVEMONITORING;+OWACTP) - 302 0 0 0 2012-11-28 12:07:52 ::1 GET /owa/auth/logon.aspx url=https%3a%2f%2flocalhost%2fowa%2f&reason=0 443 - ::1 Mozilla/4.0+(compatible;+MSIE+9.0;+Windows+NT+6.1;+MSEXCHMON;+ACTIVEMONITORING;+OWACTP) - 200 0 0 0 2012-11-28 12:07:57 fe80::d58e:d780:34ed:af68%12 RPC_IN_DATA /rpc/rpcproxy.dll 688b9c54-fc83-47a6-bf82-343799d288d5@domainname.net:6001&RequestId=565da176-2fcf-4510-a753-22b584ec6467 80 - fe80::d58e:d780:34ed:af68%12 MSRPC - 401 1 2148074254 0 2012-11-28 12:07:57 ::1 GET /ews/ - 443 domainname\SM_29bd07d0480e4b41a ::1 AMProbe/Local/ClientAccess - 200 0 0 0 2012-11-28 12:07:58 fe80::d58e:d780:34ed:af68%12 RPC_IN_DATA /rpc/rpcproxy.dll 688b9c54-fc83-47a6-bf82-343799d288d5@domainname.net:6001&RequestId=ee2712f3-8601-453a-b0c9-e91f5805d1f4 80 domainname\SM_29bd07d0480e4b41a fe80::d58e:d780:34ed:af68%12 MSRPC - 200 0 0 1015 2012-11-28 12:07:58 fe80::d58e:d780:34ed:af68%12 RPC_IN_DATA /rpc/rpcproxy.dll 688b9c54-fc83-47a6-bf82-343799d288d5@domainname.net:6001&RequestId=fa7f3d36-8824-4d96-9f1f-a6c96cb4292d 80 - fe80::d58e:d780:34ed:af68%12 MSRPC - 401 1 2148074254 0 2012-11-28 12:07:58 fe80::d58e:d780:34ed:af68%12 RPC_OUT_DATA /rpc/rpcproxy.dll 688b9c54-fc83-47a6-bf82-343799d288d5@domainname.net:6001&RequestId=3a4c74ad-6d5a-489d-8d2a-34a244f8766d 80 - fe80::d58e:d780:34ed:af68%12 MSRPC - 401 1 2148074254 0 2012-11-28 12:08:03 fe80::d58e:d780:34ed:af68%12 RPC_IN_DATA /rpc/rpcproxy.dll b182ea7a-21b5-471a-a24f-13dfbf7d5c56@domainname.net:6001&RequestId=e23195c3-b7e6-4f86-abef-d95394ef0445 80 - fe80::d58e:d780:34ed:af68%12 MSRPC - 401 1 2148074254 0 2012-11-28 12:08:03 fe80::d58e:d780:34ed:af68%12 RPC_IN_DATA /rpc/rpcproxy.dll b182ea7a-21b5-471a-a24f-13dfbf7d5c56@domainname.net:6001&RequestId=304cfabd-2c85-4310-a1cb-3a43fcc23afe 80 domainname\SM_29bd07d0480e4b41a fe80::d58e:d780:34ed:af68%12 MSRPC - 200 0 0 62 2012-11-28 12:08:03 fe80::d58e:d780:34ed:af68%12 RPC_IN_DATA /rpc/rpcproxy.dll b182ea7a-21b5-471a-a24f-13dfbf7d5c56@domainname.net:6001&RequestId=98598c38-8f6b-47eb-9283-98ad6a464e30 80 - fe80::d58e:d780:34ed:af68%12 MSRPC - 401 1 2148074254 0 2012-11-28 12:08:03 fe80::d58e:d780:34ed:af68%12 RPC_OUT_DATA /rpc/rpcproxy.dll b182ea7a-21b5-471a-a24f-13dfbf7d5c56@domainname.net:6001&RequestId=7cafff1d-31ab-45a6-9cf4-0663dfaa9fea 80 - fe80::d58e:d780:34ed:af68%12 MSRPC - 401 1 2148074254 15 </quote> <quote><quote>Thanks</quote></quote>

Hi, Does this issue occur when you accessing the ECP/OWA from IE on both the MBX and CAS server? You can try checking the IIS log and let us know the detailed error codes Please remember to mark the replies as answers if they help and unmark them if they provide no help. If you have feedback for TechNet Subscriber Support, contact tnfsl@microsoft.com Thanks, Simon Wu TechNet Community Support

Hi, From the IIS log, I find most of the error code is 302 0. I would like to ask whether you set any redirections on the default web site before? Thanks, Please remember to mark the replies as answers if they help and unmark them if they provide no help. If you have feedback for TechNet Subscriber Support, contact tnfsl@microsoft.comSimon Wu TechNet Community Support