---
title: "6.5.6 Client"
slug: "releasenotes-client-v6-5-6"
updated: 2026-09-21T13:29:46Z
published: 2026-09-21T13:29:46Z
canonical: "support.appgate.com/releasenotes-client-v6-5-6"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://support.appgate.com/llms.txt
> Use this file to discover all available pages before exploring further.

# 6.5.6 Client

Released September 16, 2026

## Updates

- Fixed an issue where certain settings implemented by the installer, such as attention mode, did not take effect.
- Resolved an issue where the certificate integrity check severely impacted client startup performance under certain conditions and sometimes caused install/upgrade to fail.