Troubleshooting Tip: Unable to login to GUI showing error 'Login failed. A valid certificate is required to login.'
| Description | This article how to fix the error 'Login failed. A valid certificate is required to log in.' when logging in to the GUI of FortiGate. |
| Scope | FortiGate. |
| Solution | When logging in to the GUI of FortiGate, an error message appears 'Login failed. A valid certificate is required to login.':
This behaviour occurs after upgrading to v7.2.11, v7.4.6, or later. The fix is included in FortiOS versions 7.4.8 and 7.6.3.
Access the FortiGate CLI through SSH or the console:
Under system global settings, disable 'admin-https-pki-required'.
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