Mar
19
2013

Service Unavailable : HTTP Error 503. The service is unavailable

After applying SQL Server service pack on one of SQL Server 2008, faced situation when user reporting then he is unable to open his webpage, he was receiving following error,

 

HTTP Error 503. The service is unavailable

 

 

After restarting OS, IIS 7.5 services as well received same error, finally found the solution as,

 

1. Open the Internet Information Services (IIS) Manager

2. Select the Application Pools node under the root node in the left hand side frame

3. Right Click on the DefaultAppPool. If the service is stopped, start it. If the service is running, restart it.

4. Issue should resolve.

 

Hope it helps!

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About the Author: Nitin G

Indian born, trekker, biker, photographer, lover of monsoons. I've been working full time with SQL Server since year 2005 and blogs to post the content aquired during my research on new topics or fixing issues faced by me as a DBA while working in different kind of projects, hope some of my posts may helps others in SQLDBA community. Everything you read on my blog is my own personal opinion and any code is provided "AS-IS" with no warranties!

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