Error Message

In the Enterprise Vault Event Log:

Event ID: 41521
Description: Enterprise Vault Search cannot perform certain operations. Check that all Enterprise Vault services are running.

v-437-41521

In a Dtrace log of the w3wp process:

{EVS} Exception: Could not load type 'System.ServiceModel.Activation.HttpHandler' from assembly 'System.ServiceModel, Version=3.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'. Info:Unhandled Exception in Enterprise Vault Search.  || User: evlab\user1 ||  Diag: Type:System.TypeLoadException ST:   at System.RuntimeTypeHandle.GetTypeByName(String name, Boolean throwOnError, Boolean ignoreCase, Boolean reflectionOnly, StackCrawlMarkHandle stackMark, IntPtr pPrivHostBinder, Boolean loadTypeFromPartialName, ObjectHandleOnStack type)|   at System.RuntimeTypeHandle.GetTypeByName(String name, Boolean throwOnError, Boolean ignoreCase, Boolean reflectionOnly, StackCrawlMark& stackMark, IntPtr pPrivHostBinder, Boolean loadTypeFromPartialName)|   at System.RuntimeType.GetType(String typeName, Boolean throwOnError, Boolean ignoreCase, Boolean reflectionOnly, StackCrawlMark& stackMark)|   at System.Type.GetType(String typeName, Boolean throwOnError, Boolean ignoreCase)|   at System.Web.Compilation.BuildManager.GetType(String typeName, Boolean throwOnError, Boolean ignoreCase)|   at System.Web.Configuration.HandlerFactoryCache.GetTypeWithAssert(String type)|   at System.Web.Configuration.HandlerFactoryCache.GetHandlerType(String type)|   at System.Web.Configuration.HandlerFactoryCache..ctor(String type)|   at System.Web.HttpApplication.GetFactory(String type)|   at System.Web.HttpApplication.MaterializeHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()|   at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) Inner:None
Event ID: 41521 Enterprise Vault Search cannot perform certain operations. Check that all Enterprise Vault services are running.
 

This issue can be caused by missing information in the applicationHost.config file in the %windir%\system32\inetsrv\config folder on the EVS server.

On the EVS server, edit the applicationHost.config file located in the %windir%\system32\inetsrv\config directory on the Windows Server 2012 R2 as follows:

1. Add " ,runtimeVersionv2.0" (without quotations) to the end of the line below the existing line:
3. Updated Line:
   1. />
4. In an Administrative Command Prompt, run the following command: iisreset
5. Restart the EV Indexing Service.