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pachavez
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‎05-21-2025
Last activity: May 21, 2025 7:50:10 PM
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Troubleshooting Tip: Unable to login to GUI showing error 'Login failed. A valid certificate is required to login.'

04-07-2025
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 faile...

Technical Tip: Assets and Identities: FortiGuard IoT/OT Detected Vulnerabilities shows 'OT vulnerabilities are not shown as FortiGuard OT License is inactive' even with full Operational Technology (OT) Security Service license

03-03-2025
Description This article describes how to fix the warning message under Dashboard -> Assets & Identities -> Asset View -> View the 'Vulnerabilities' column, when the tooltip displays 'OT Vulnerabilities are not shown as FortiGuard OT license is inact...

Technical Tip: How to fix FortiClient VPN certificate error ‘The Certificate Issuer for this site is Untrusted or unknown.’

01-07-2025
Description This article describes solutions on how to fix the certificate warning message 'The Certificate Issuer for this site is Untrusted or unknown.’ in FortiClient VPN when a self-signed certificate such as the Fortinet Factory default built-in...

Troubleshooting Tip: FortiGate unable to synchronize with FortiManager Cloud

11-25-2024
Description This article describes solution when FortiGate is unable to synchronize with FortiManager Cloud. In this scenario, status of FortiManager Cloud shows 'Not Managed' in FortiGate and 'Unknown' in FortiManager Cloud. Scope FortiManager Cloud...

Troubleshooting Tip: SSL VPN local user not able to connect showing 'Permission denied. (-455)' error

09-05-2024
Description This article describes a solution on how to resolve an issue when a local user is not able to log in to FortiClient showing 'Permission denied. (-455)' error. Scope FortiGate, FortiClient. Solution In this example, local VPN user 'PearlAn...
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