Unable to connect to LDAP on Windows Server 2025 Domain Controller from Fortigate

After modifying the Domain Controller Policy like below, it works now both with SSL disabled and enabled.

Domain Controller Policy
===Computer Configuration
======Policies
=========Windows Settings
============Security Settings
===============Local Policies
==================Security Options
=====================Domain controller: LDAP server channel binding token requirements: “When Supported”
=====================Domain controller: LDAP server signing requirements: “None”
=====================Domain controller: LDAP server Enforce signing requirements: “Disabled”
=====================Network security: LDAP client encryption requirements: “Negotiate Sealing”
=====================Network security: LDAP client signing requirements: “Negotiate Signing”