Plesk shows HTTP Error 503. The service is unavailable: Application pool PleskControlPanel has been disabled

Created:

2016-11-16 12:58:43 UTC

Modified:

2017-08-08 13:09:18 UTC

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Plesk shows HTTP Error 503. The service is unavailable: Application pool PleskControlPanel has been disabled

Applicable to:

  • Plesk for Windows
  • Plesk 12.5 for Windows

Symptoms

  • Plesk is not accessible with the following error:
    HTTP Error 503. The service is unavailable.
  • PleskControlPanel application pool permanently goes down with the following errors in Event Viewer:

    Application pool PleskControlPanel has been disabled. Windows Process Activation Service (WAS) did not create a worker process to serve the application pool because the application pool identity is invalid.
  • Security Audit event with ID 4625 has contents like:

    An account failed to log on.

    Subject:
    Security ID: SYSTEM
    Account Name: SOMENAME$
    Account Domain: SOMEGRP
    Logon ID: 0x3E7

    Logon Type: 4

    Account For Which Logon Failed:
    Security ID: NULL SID
    Account Name: psaadm
    Account Domain: SOMEGRP

    Failure Information:
    Failure Reason: The user has not been granted the requested logon type at this machine.

Cause

psaadm user does not have necessary rights.

Resolution

  1. Open Local Group Policy Editor via gpedit.msc
  2. Go to Local Computer Policy > Computer Configuration > Security Settings > Local Policies > User Rights Assignment
  3. Ensure that Everyone group is not listed in 'Deny log on as a batch job.'
  4. Ensure that psaadm user is listed in 'Logon as Batch Job' policy
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