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I am getting 'HTTP Error 503. The service is unavailable.' What should I do?
Cause : This error is encountered when application pool of website is stopped or queue request is full of application pool.
- Log into your server via remote desktop.
- Click on Start – Run – Type inetmgr – Press enter key.
- Expand IIS – click on application pools – Start application pool if it shows stopped.
- Or right click on application pool and click on recycle.