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IIS Application Host Helper Service Availability

Applies To: Windows Server 2008

The Internet Information Services (IIS) Application Host Helper Service requires access to a directory in which it can store temporary configuration files that it creates at run-time for application pools. The directory must be available to WAS and cannot be on a UNC path. If these conditions are not met, the Application Host Helper Service SID mapping functionality may be unavailable.

Events

Event ID Source Message

5188

Microsoft-Windows-WAS

The directory specified for the temporary application pool config files is either missing or is not accessible by the Windows Process Activation Service. Please specify an existing directory and/or ensure that it has proper access flags. The data field contains the error number.

5189

Microsoft-Windows-WAS

The Windows Process Activation Service failed to generate an application pool config file for application pool '%1'. The error type is '%2'. To resolve this issue, please ensure that the ApplicationHost.config file is correct and recommit the last configuration changes made. The data field contains the error number.

5191

Microsoft-Windows-WAS

The directory specified for the temporary application pool config files is a UNC path, which is not allowed. Please specify an existing local directory instead. The data field contains the error number.

IIS Application Host Helper Service (AppHostSvc)

Internet Information Services (IIS) 7.0