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Event ID 1255 in Health Log

Symptom​

The following error message under Event ID 1255 is prompted in Health Log for your SharePoint monitoring plan:

Site collection %URL% cannot be found.

Causes​

  1. An invalid site collection URL was specified during the monitoring plan creation.
  2. The affected site collection has the Locked — No Access status.

Resolution​

  • Cause #1

    1. Navigate to Monitoring Plans.
    2. Select the %affected_SP_monitoring_plan% and click Edit.
    3. Click Edit item in the right pane.
    4. In the Changes tab, verify the affected collection URL under the Specific SharePoint objects section.

  • Cause #2

    1. In SharePoint Central Administration, navigate to Application Management > Configure Quotas and Locks.
    2. Select %affected_collection% and change the status to Not locked.