Troubleshoot BitLocker

Applies to: Configuration Manager (current branch)

Use the information in this article to help you troubleshoot issues with BitLocker management in Configuration Manager.

Server error in self-service

When trying to open the self-service portal ( for the first time, you see the following error message:

Configuration Error - Server Error in '/SelfService' Application

Description: An error occurred during the processing of a configuration file required to service this request. Please review the specific error details below and modify your configuration file appropriately.

Parser Error Message: Could not load file or assembly 'System.Web.Mvc, Version=, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The system cannot find the file specified.

To fix this issue, make sure you installed the prerequisite for Microsoft ASP.NET MVC 4.0 on the web server.

See also

For more information about using BitLocker event logs, see BitLocker event logs.

For a list of known errors and possible causes for event log entries, see the following articles:

To understand why clients are reporting not compliant with the BitLocker management policy, see Non-compliance codes.