Re: Issue with DNS after disconnecting from VPN se...

adhawan · 09-29-2025

Description This article describes the steps to troubleshoot and resolve IS-IS and BGP parse error alarms on FortiGate devices. The alarms may appear after a firmware upgrade, and the cause can be related to neighbouring devices sending unexpected or...

adhawan · 08-22-2024

Description This article describes how to resolve an issue where the user is unable to connect to SSL VPN (via a remote gateway IP) while the FortiClient is integrated with FortiSASE through Zero Trust Telemetry. Scope FortiSASE, Forticlient. Solutio...

adhawan · 07-21-2024

Description This article describes the script error 'Access is denied' while the VPN auto-connects using Entra ID SSO. Scope FortiSASE. Solution As shown in the below image. The Script error 'Access is denied' indicated that the custom redirect URL f...

adhawan · 06-10-2024

Description This article describes the scenario when a user is encountering issues with web applications. Scope FortiSASE. Solution When encountering issues with web applications such as websites do not load all content or the page cannot be fully lo...

adhawan · 04-02-2024

Description This article describes how to fix the issue in case ERROR 21400 occurs. Scope FortiSASE. Solution After provisioning FortiSASE, below display could appear: To resolve this error: Start by clearing the cache of the web browser to access th...

adhawan · 08-13-2025

Hi @Toshi_Esumi If version 7.4.x is not available for an older hardware model, check the FortiOS compatibility matrix to confirm if the model is supported. If not, consider upgrading the hardware or using a compatible version.

adhawan · 08-13-2025

Hi Aneesh,To configure the correct routing or forwarding mechanisms from FortiGate to Azure, you can leverage Fortinet's integration with Azure Virtual WAN. This integration allows for the creation of custom route tables in addition to the default ro...

adhawan · 07-07-2025

Hi I suggest ensuring that the network drivers on the affected PCs are up to date. Outdated drivers can cause network connection issues.Verify if any recent Windows updates have been installed, as they might cause network connection issues.Ensure tha...

adhawan · 07-07-2025

You may find the following article helpful in this instance as it specifically refers to the issues and some methods to deal with it: https://community.fortinet.com/t5/FortiGate/Troubleshooting-Tip-Possible-reasons-for-FortiClient-SSL-VPN/ta-p/211965

adhawan · 05-04-2025

@JCASteel Memory logging only shows logs with level warning or higher. Logs lower than warning are not stored in memory. It can be verified via CLI to check that the severity setting has been set to information: #get log memory filterThanks

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Troubleshooting Tip: Resolving IS-IS and BGP Parse Error Alarms on FortiGate

Troubleshooting Tip: Unable to connect SSL VPN with a FortiSASE Integrated FortiClient

Technical Tip: Script error 'Access is denied' while the VPN auto-connects using Entra ID SSO

Troubleshooting Tip: Encountering issues with web applications

Troubleshooting Tip: ERROR 21400: Resource configuration cannot be initialized

Re: Unable to manual upgrade firmware with 7.2.11

Re: Request for Support: Traffic Forwarding Configuration from FortiGate to Azure