• The Horde webmail has been deprecated. Its complete removal is scheduled for April 2025. For details and recommended actions, see the Feature and Deprecation Plan.
  • We’re working on enhancing the Monitoring feature in Plesk, and we could really use your expertise! If you’re open to sharing your experiences with server and website monitoring or providing feedback, we’d love to have a one-hour online meeting with you.

Issue error 500 Session_Exception login to Plesk

The locale which had been previously chosen as a default was unregistered from the Plesk database during a Plesk upgrade.
Try to fix it with the following steps:
  1. Set the locale en-US as default:
    Code:
    # plesk bin server_pref --set-default -locale en-US
    # plesk bin admin -u -locale en-US
  2. Reinstall Plesk updates:
    Code:
    # plesk installer update --repatch
  3. Log in to Plesk and set a required locale at Tools & Settings > Languages.
 
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