Title: http error 503
Last modified: August 22, 2016

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# http error 503

 *  [Ryan K](https://wordpress.org/support/users/techusa/)
 * (@techusa)
 * [11 years, 4 months ago](https://wordpress.org/support/topic/http-error-503-504/)
 * My WP sites are returning an “HTTP Error 503. The service is unavailable” error
   whenever attempting to visit it or access the wp-admin login page. I also own
   the server it’s hosted from, which is Windows Server 2008 with IIS 7. Running
   MySQL 5.6.21
 * It doesn’t appear that anything changed in the past few days, but it just suddenly
   stopped working. The DefaultAppPool uses NetworkService as the identity, I increased
   the queue length to 5000, I’ve verified the permissions are still the same as
   before, I’m at a complete loss as to what the problem is and I’ve been searching
   the net for hours trying to find solutions but I’m coming short on everything.
   Any suggestions or help would be appreciated.

Viewing 1 replies (of 1 total)

 *  Thread Starter [Ryan K](https://wordpress.org/support/users/techusa/)
 * (@techusa)
 * [11 years, 4 months ago](https://wordpress.org/support/topic/http-error-503-504/#post-5625195)
 * Should also mention that I have two other sites hosted on this server that are
   not on WordPress and those both work just fine.
 * I also pulled up log files located in C:\Windows\system32\logfiles\HTTPERR and
   each ones shows QueueFull as the reason.

Viewing 1 replies (of 1 total)

The topic ‘http error 503’ is closed to new replies.

 * In: [Fixing WordPress](https://wordpress.org/support/forum/how-to-and-troubleshooting/)
 * 1 reply
 * 1 participant
 * Last reply from: [Ryan K](https://wordpress.org/support/users/techusa/)
 * Last activity: [11 years, 4 months ago](https://wordpress.org/support/topic/http-error-503-504/#post-5625195)
 * Status: not resolved

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