Technical Tip: ZTNA Agentless not working properly on 90G devices in v7.6.x

The ZTNA web portal allows users to access applications without needing to install FortiClient or use a client certificate. It verifies the user identity and permissions before allowing access to protected resources.

Documentation:

ZTNA agentless web-based application access 

This feature is not working on 90G devices in v7.6.1 through v7.6.3. It is resolved in v7.6.4 (already available) and 8.0.0 (supposed to be released in March 2026).

A few examples:

1. In v7.6.1 and v7.6.2, when the user tries to establish an RDP connection, a black screen is presented:

2. In v7.6.3, after entering the credentials to access the ZTNA portal, the user is redirected to a page with the information 'The requested URL was not found on this server':

Notes to be considered to ensure optimal DNS resolution results: DNS Configurations for Web Application Traffic.