Plesk shows Error 503. The service is unavailable: System.OutOfMemoryException

Created:

2016-11-16 12:57:30 UTC

Modified:

2017-08-08 13:43:36 UTC

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Plesk shows Error 503. The service is unavailable: System.OutOfMemoryException

Applicable to:

  • Plesk 12.5 for Windows

Symptoms

  1. Plesk is not accessible:

    Error 503. The service is unavailable.
  2. Unable to start PleskControlPanel application pool: it's getting stopped.

  3. The following error is found in Event Viewer:

    IISMANAGER_CRASH
    IIS Manager terminated unexpectedly.
    Exception:System.Configuration.ConfigurationErrorsException: Configuration system failed to initialize ---> System.OutOfMemoryException: Exception of type 'System.OutOfMemoryException' was thrown.
  4. Task Manager shows there is maximum memory usage in Performance

Cause

Server is out of memory.

Resolution

Restart those services that take much memory or increase physical memory on the server.

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