Everything else works. OWA works. Activesync works. I read that Macs use EWS to connect. attempted to access localhost/ews/exchange.asmx and received the following message. Any assistance is greatly appreciated. Server Error in '/EWS' Application. Could not load file or assembly 'Microsoft.Exchange.Data.Directory, Version=14.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The system cannot find the file specified. Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.IO.FileNotFoundException: Could not load file or assembly 'Microsoft.Exchange.Data.Directory, Version=14.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The system cannot find the file specified. Source Error: An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below. Assembly Load Trace:The following information can be helpful to determine why the assembly 'Microsoft.Exchange.Data.Directory, Version=14.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' could not be loaded. WRN: Assembly binding logging is turned OFF. To enable assembly bind failure logging, set the registry value [HKLM\Software\Microsoft\Fusion!EnableLog] (DWORD) to 1. Note: There is some performance penalty associated with assembly bind failure logging. To turn this feature off, remove the registry value [HKLM\Software\Microsoft\Fusion!EnableLog]. Stack Trace: [FileNotFoundException: Could not load file or assembly 'Microsoft.Exchange.Data.Directory, Version=14.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The system cannot find the file specified.] System.Signature._GetSignature(SignatureStruct& signature, Void* pCorSig, Int32 cCorSig, IntPtr fieldHandle, IntPtr methodHandle, IntPtr declaringTypeHandle) +0 System.Signature..ctor(RuntimeMethodHandle methodHandle, RuntimeTypeHandle declaringTypeHandle) +236 System.Reflection.RuntimeMethodInfo.get_Signature() +91 System.Reflection.RuntimeMethodInfo.get_ReturnType() +19 System.Web.HttpApplicationFactory.ReflectOnMethodInfoIfItLooksLikeEventHandler(MethodInfo m) +30 System.Web.HttpApplicationFactory.ReflectOnApplicationType() +223 System.Web.HttpApplicationFactory.Init() +11343600 System.Web.HttpApplicationFactory.EnsureInited() +55 System.Web.Compilation.BuildManager.CompileGlobalAsax() +70 System.Web.Compilation.BuildManager.EnsureTopLevelFilesCompiled() +676 [HttpException (0x80004005): Could not load file or assembly 'Microsoft.Exchange.Data.Directory, Version=14.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The system cannot find the file specified.] System.Web.Compilation.BuildManager.ReportTopLevelCompilationException() +76 System.Web.Compilation.BuildManager.EnsureTopLevelFilesCompiled() +1012 System.Web.Hosting.HostingEnvironment.Initialize(ApplicationManager appManager, IApplicationHost appHost, IConfigMapPathFactory configMapPathFactory, HostingEnvironmentParameters hostingParameters) +1025 [HttpException (0x80004005): Could not load file or assembly 'Microsoft.Exchange.Data.Directory, Version=14.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The system cannot find the file specified.] System.Web.HttpRuntime.FirstRequestInit(HttpContext context) +11335894 System.Web.HttpRuntime.EnsureFirstRequestInit(HttpContext context) +88 System.Web.HttpRuntime.ProcessRequestNotificationPrivate(IIS7WorkerRequest wr, HttpContext context) +4355316 Version Information: Microsoft .NET Framework Version:2.0.50727.5448; ASP.NET Version:2.0.50727.5456

Seems like you're using RTM, I'd upgrade to SP2 and then test again.Sukh

Hi Reset the EWS Virtual Directory from EMS Remove-WebServicesVirtualDirectory -Identity "server\ews (Default Web Site)" New-WebServicesVirtualDirectory -WebsiteName "Default Web Site" -InternalUrl "https://Sites/EWS/Exchange.asmx" -basicauthentication 1 -windowsauthentication 1 After that, please perform IISreset /noforce on the server and try again Thanks Mouzzam Hussain Visit to my Blog mouzzamh.wordpress.com