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503.0
Application pool unavailable
Description
A needed web server service is stopped or not available.
Occurrences
Frequency is relative to other Internet warnings and errors.
Solutions and Fixes
This issue can only be fixed by the web site owner.
Locate Cached Page
8
If the page has been deleted from the server or it is not currently available you can try to get an achived copy. If you used a link from a search engine, you might be able to get some information by using the "cached" option.
You can also try viewing the site or page from an archive such as the WaybackMachine.
Most archives and cached versions only retains the site text. Graphics and other media objects are linked to the orignal site and may or may not be available.
FaultWire Staff Posted: 3-Dec-2009
Try Again Later
7
You can try to access the site again at a later time when the server issue has been corrected.
FaultWire Staff Posted: 8-Oct-2008
Notify Webmaster
7
You might notify the webmaster about the issue. Include the error number and the address (URL) where the error occurred along with any other relevant details.
Many sites use an email address in the form webmaster@sitename.com where you replace sitename.com with the web sites address (don't include a www). Keep in mind with the amount of spam, they may use a different address and/or it might get ignored. Check the websites' contact information to get reliable contact information.
FaultWire Staff Posted: 8-Oct-2008
Official Explanation
The request is sent to an application pool that is currently stopped or that is currently disabled. To resolve this issue, make sure that the destination application pool is started. The event log [on the server] may give information about why the application pool is stopped or disabled.
"503.0 - Application pool unavailable" is only supported by Microsoft IIS (Internet Information Services) web server version 7 and later.
The five hundred series of errors indicate something is wrong at the server and it is unable to complete the action.
While we believe this information up to date and accurate, FAQware is not responsible for any inaccuracies. If you find something that is out of date or inaccurate, please let us know at
so we can correct it.
