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Error 503 — Unable to Access Change Tracker Login Screen

Symptom​

The following error appears when attempting to access Netwrix Change Tracker:

Connection to server lost
Server unavailable since <datestamp> (local),
(503)

Cause​

The Change Tracker web application pool is not running. The application pool may fail to start if the custom Identity user has incorrect credentials.

Resolution​

  1. In the left pane of IIS Manager, select the Application Pools page.
  2. Locate the Change Tracker web application pool, right-click it, and select Advanced Settings...
  3. Under the Process Model section, locate the Identity node, select it, and click the ellipsis button.
  4. Click Set..., and specify new credentials for the account to run the application pool.
  5. Click OK > OK > OK to save changes.
  6. Right-click the pool and select Start to run it.