SCCM - Component Status - SMS_MP_CONTROL_MANAGER - not responding to http requests

Issue

When you navigate to Site Database > System Status > Site Status > (site name) > Component Status the SMS_MP_CONTROL_MANAGER component has a Status of Critical. If you right click the component > Show Messages > All then you encounter the following error message:

MP Control Manager detected management point is not responding to HTTP requests.  The HTTP status code and text is 500, Internal Server Error.

Possible cause: Management point encountered an error when connecting to SQL Server. 
Solution: Verify that the SQL server is properly configured to allow Management Point access. Verify that management point computer account or the Management Point Database Connection Account is a member of SMS Management Point Role (msdbrole_MP) in the SQL Server database.

Possible cause:  The SQL Server Service Principal Names (SPNs) are not registered correctly in Active Directory
Solution:  Ensure SQL server SPNs are correctly registered.  Review Q829868.

Possible cause: Internet Information Services (IIS) isn't configured to listen on the ports over which SMS is configured to communicate. 
Solution: Verify that the designated Web Site is configured to use the same ports which SMS is configured to use.

Possible cause: The designated Web Site is disabled in IIS. 
Solution: Verify that the designated Web Site is enabled, and functioning properly.

Possible cause: The SMS ISAPI Application Identity does not have the requisite logon privileges. 
Solution: Verify that the account that the SMS ISAPI is configured to run under has not been denied batch logon rights through group policy.

For more information, refer to Microsoft Knowledge Base article 838891."

If you open up the mpcontrol.log you should see more details relating to this error.

Cause

Sort of depends on what the fix turns out to be. In my experience the root cause is usually a corrupt ccm client.

Resolution

Option A

Check to see if this kb is relevant http://support.microsoft.com/kb/2796086  

Option B

Log on to your SQL server. Navigate to SQL Server Configuration Manager > Network
Configuration > Protocols for MSSQLSERVER / TCP/IP  
Make sure this is set to "enable".

Option C

Fully uninstall the SCCM client from the server which holds the management point by using navigating to the ccmsetup directory (c:\windows\ccmsetup) and then running the following command: ccmsetup.exe /uninstall
Once this has completed, restart the SMS Exec service. Assuming no errors appear in the mpcontrol.log, warmly congratulate yourself on a job well done. If errors do appear, take a run at Option D.

Option D

Remove the Management Point. Remove the SCCM Client. Reinstall the Management Point. Reinstall the client.