Exchange Server - ECP yüklenirken alınan "Server Error in '/ecp' Application" hatası

 Exchange Server security update geçişi sonrasında ECP'ye erişmeye çalıştığınızda aşağıdaki gibi bir hata ile karşılaşabilirsiniz. 

Server Error in ‘/ecp’ Application.
Could not load file or assembly ‘Microsoft.Exchange.Common, Version=15.0.0.0 …Culture=neutral, PublicKeyToken=31bf3856ad364e35’ or one of its dependencies. The system cannot find the file specified.


Sorunun çözümü için;

1. IIS Manager'ı açınız.
2. Exchange Back End site --> ecp virtual direcory seçiniz.
3. Application Setting altındaki "BinSearchFolders" seçeneciğini bulunuz.




4. Value kısmına baktığınızda aşağıdaki değerleri göreceksiniz;

%ExchangeInstallDir%bin;
%ExchangeInstallDir%bin\CmdletExtensionAgents;
%ExchangeInstallDir%ClientAccess\Owa\bin

5. Değerleri aşağıdakiler ile değiştirin.
Not:Girilen değerler Exchange'in kurulu olduğu path'i göstermelidir. 

C:\Program Files\Microsoft\Exchange Server\V15\bin;
C:\Program Files\Microsoft\Exchange Server\V15\bin\CmdletExtensionAgents;
C:\Program Files\Microsoft\Exchange Server\V15\ClientAccess\Owa\bin
 

6. Exchange Management shell üzerinden .\UpdateCas.ps1 ve .\UpdateConfigFiles.ps1 sctriplerini çalıştırınız. Scriptler Exchange'in kurulu olduğu path'in altında yer almaktadır.
Örnek: C:\Program Files\Microsoft\Exchange Server\V15\Scripts\\UpdateCas.ps1


7. IIS restart ediniz. 

Hata metni:

Could not load file or assembly 'Microsoft.Exchange.Common, Version=15.0.0.0, 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.Common, Version=15.0.0.0, 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.Common, Version=15.0.0.0, 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.Common, Version=15.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The system cannot find the file specified.] 
System.RuntimeTypeHandle.GetTypeByName(String name, Boolean throwOnError, Boolean ignoreCase, Boolean reflectionOnly, StackCrawlMarkHandle stackMark, IntPtr pPrivHostBinder, Boolean loadTypeFromPartialName, ObjectHandleOnStack type) +0 
System.RuntimeTypeHandle.GetTypeByName(String name, Boolean throwOnError, Boolean ignoreCase, Boolean reflectionOnly, StackCrawlMark& stackMark, IntPtr pPrivHostBinder, Boolean loadTypeFromPartialName) +96 
System.Type.GetType(String typeName, Boolean throwOnError, Boolean ignoreCase) +65 
System.Web.Compilation.BuildManager.GetType(String typeName, Boolean throwOnError, Boolean ignoreCase) +62 
System.Web.Configuration.ConfigUtil.GetType(String typeName, String propertyName, ConfigurationElement configElement, XmlNode node, Boolean checkAptcaBit, Boolean ignoreCase) +50

[ConfigurationErrorsException: Could not load file or assembly 'Microsoft.Exchange.Common, Version=15.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The system cannot find the file specified.] 
System.Web.Configuration.ConfigUtil.GetType(String typeName, String propertyName, ConfigurationElement configElement, XmlNode node, Boolean checkAptcaBit, Boolean ignoreCase) +572 
System.Web.Configuration.ConfigUtil.GetType(String typeName, String propertyName, ConfigurationElement configElement, Boolean checkAptcaBit) +31 
System.Web.Configuration.Common.ModulesEntry.SecureGetType(String typeName, String propertyName, ConfigurationElement configElement) +59 
System.Web.Configuration.Common.ModulesEntry..ctor(String name, String typeName, String propertyName, ConfigurationElement configElement) +59 
System.Web.HttpApplication.BuildIntegratedModuleCollection(List`1 moduleList) +221 
System.Web.HttpApplication.GetModuleCollection(IntPtr appContext) +1103 
System.Web.HttpApplication.RegisterEventSubscriptionsWithIIS(IntPtr appContext, HttpContext context, MethodInfo[] handlers) +122 
System.Web.HttpApplication.InitSpecial(HttpApplicationState state, MethodInfo[] handlers, IntPtr appContext, HttpContext context) +173 
System.Web.HttpApplicationFactory.GetSpecialApplicationInstance(IntPtr appContext, HttpContext context) +255 
System.Web.Hosting.PipelineRuntime.InitializeApplication(IntPtr appContext) +347

[HttpException (0x80004005): Could not load file or assembly 'Microsoft.Exchange.Common, Version=15.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The system cannot find the file specified.] 
System.Web.HttpRuntime.FirstRequestInit(HttpContext context) +552 
System.Web.HttpRuntime.EnsureFirstRequestInit(HttpContext context) +122 
System.Web.HttpRuntime.ProcessRequestNotificationPrivate(IIS7WorkerRequest wr, HttpContext context) +737

Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.8.4330.0

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