ZEN Error Codes for Kerberos
From Tech-Wiki
If Kerberos authentication fails, the ZEN displays a page with an error code. The details of the error codes are as follows:
| Error Code | Description | When It Occurs | What to do |
|---|---|---|---|
| 441000, 461000 | The user cannot be found. | The user was deleted or cannot be found in the registered domain. | Add the user. |
| 451000 | The domain does not exist. | The realm is not a registered domain on the Zscaler service. | Contact Zscaler support to add the realm as a registered domain. |
| 491000, 501000 | Invalid Kerberos token or username. | The computer time is incorrect. | Kerberos is very sensitive to clocks being in sync. Ensure that computer time is correct and it synchronizes from an NTP server. |
For more information please refer to the Zscaler article - ZEN Error Codes for Kerberos