Error Code - 503 'Service Unavailable' - mpcontrol.log

Hello Everyone,

While working in my lab today I encountered one issue with the Management Point of a stand alone Primary Site. It's a fresh install of SCCM 2012 SP1 on Windows 2012 Server.

After installing the Management Point when I checked the mpcontrol.log I saw the below given error message in the log

Error: Http test request failed, status code is 503, 'Service Unavailable'. - mpcontrol.log

Tried to browse the Default Web Site but still got the same error message. It was sure that the problem is either with whole IIS installation or with some of its component.

Checked the Windows System Event logs and found a warning and  error related to the WAS (Windows Process Activation Service)

Warning:

Error:

Checked the WAS component of Web Server role and found that it's not installed. Installed the component  and restarted the Server but still could not get the Management Point working.

Did some research on Internet and found that it's an issue with the Application Pools. DefaultAppPool and SMS Management Point Pool were in Stopped state.

Started the Pools and checked the logs but still there is no improvement.

When checked back the pools found them in Stopped state again.

Explored Internet and found this useful Blog :http://mvolo.com/where-did-my-iis7-server-go-troubleshooting-503-quotservice-unavailablequot-errors/

The blog explains almost everything about the "Error 503 - Service Unavailable" in IIS.

Following the article looked into the Application Event Logs and found the below error events from IIS-W3SVC WP Source.

Searched for the modrqflt.dll (dll responsible for Request Filtering in IIS)  file but could not find it in the inetsrv folder

Then checked for the installed components through the Server Manager and found that the request filtering component of Web Server Role was not installed.

Installed the Request Filtering component, restarted the IIS and then the SMS Executive Service.

Finally MP completed a self check successfully.

Your opinions and views are more than Welcome. I will be very happy to have them added to the post !!

Thanks 

Manish Tayal