Event ID - 9006

Event Id9006
SourceMicrosoft-Windows-IIS-APPHOSTSVC
DescriptionThe Application Host Helper Service encountered an error trying to process the configuration data for config history. The feature will be disabled. To resolve this issue, please confirm that the configuration file is correct, has correct attribute values for config history and recommit the changes. The feature will be enabled again if the configuration is correct. The data field contains the error number.
Event Information According to Microsoft :

Cause :

This event is logged when the Application Host Helper Service encountered an error trying to process the configuration data for config history.

Resolution :

Edit application host history configuration

To change the application host history settings, edit the configHistory section in the ApplicationHost.config file.

To perform this procedure, you must have membership in Administrators , or you must have been delegated the appropriate authority.

To edit the configHistory section in the ApplicationHost.config file:
  1. Open an elevated Command Prompt window. Click Start , point to All Programs , click Accessories , right-click Command Promp t, and then click Run as administrator .
  2. Change to the directory %Windir%\system32\inetsrv .
  3. Type appcmd add backup backupName to back up the ApplicationHost.config file.
    A directory with the backup name that you specify will be created under the %Windir%\system32\inetsrv\backup directory . If you do not specify a name, appcmd will generate a directory name automatically using the current date and time.
  4. Change the directory to %Windir%\system32\inetsrv\config .
  5. Type notepad ApplicationHost.config .
  6. In notepad, search for the configHistory section under the system.applicationHost section.
  7. Use the article IIS 7.0: configHistory Element (IIS Settings Schema) as a reference to return the configHistory section settings to a well-known state.
  8. Save and close the ApplicationHost.config file.
Verify :

To verify the configuration of the AppHostSvc configuration history backup feature, you can do the following:
  • Use notepad to examine the current configHistory section settings in the ApplicationHost.config file.
  • Use the Appcmd.exe command-line administration utility to view the configHistory section in the ApplicationHost.config file.
To perform these procedures, you must have membership in Administrators , or you must have been delegated the appropriate authority.

View the configHistory section by using notepad

To view the configHistory section by using notepad:
  1. Open an elevated Command Prompt window. Click Start , point to All Programs , click Accessories , right-click Command Prompt , and then click Run as administrator .
  2. Type cd %Windir%\system32\inetsrv\config .
  3. Type notepad ApplicationHost.config .
  4. In notepad, search for the configHistory section under system.applicationHost .
View the configHistory section by using Appcmd.exe

To view the configHistory section by using Appcmd.exe:
  1. Open an elevated Command Prompt window. Click Start , point to All Programs , click Accessories , right-click Command Prompt , and then click Run as administrator .
  2. Type cd %Windir%\system32\inetsrv .
  3. Type appcmd list config "Default Web Site" /section:configHistory /config:* . (This example uses the default Web site; replace the site name as necessary.)
Reference LinksEvent ID 9006 from Source Microsoft-Windows-IIS-APPHOSTSVC

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