HTTP Error 503.0 - Service Temporarily Unavailable

503 Service Temporarily Unavailable

Most likely causes:

  • An invalid identity in the application pool could cause this error.
  • The application pool is no longer running because of configuration or reaching application failure limits.
  • The concurrent application request limit was reached.

Things you can try:

  • Check the event logs and the HTTP error logs for more information.

Detailed Error Information:

Module   RewriteModule
Notification   BeginRequest
Handler   StaticFile
Error Code   0x00000000
Requested URL   http://www.juhua554234.cn:80/articles/3729.html
Physical Path   C:\Inetpub\vhosts\juhua554234.cn\httpdocs\articles\3729.html
Logon Method   Not yet determined
Logon User   Not yet determined

More Information:

This error occurs when the worker process was unable to start. This could be due to an invalid identity or configuration, or because the concurrent request limit was reached.

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