KB5122880: Overview with user sentiment and feedback

Overview

KB5122880 is the September 2026 cumulative security update for Windows 11 version 23H2 (OS Build 22621.7582), released on September 8, 2026. This mandatory patch addresses security vulnerabilities and includes quality improvements from the previous month's preview release. The update is part of Microsoft's regular Patch Tuesday security release cycle and applies to all editions of Windows 11 version 23H2.

General Purpose

• Security Updates: Provides critical security fixes and improvements for Windows operating system vulnerabilities
• Secure Boot Certificate Deployment: Increases device targeting coverage for automatic delivery of new Secure Boot certificates to prevent future expiration issues
• Remote Desktop Audio Fix: Resolves issues affecting Remote Desktop audio redirection where audio from remote sessions might not play on local computers
• Localization Updates: Adjusts Morocco Standard Time to reflect the country's transition to permanent UTC+00:00 effective September 20, 2026
• Cellular and Logging Improvements: Updates COSA profiles for Telavox and Swisscom, and enhances OMA DM logging features for better server connection debugging
• Servicing Stack Update: Includes KB5122879 to ensure robust and reliable Windows update installation capabilities

General Sentiment

Community reception for this update appears positive overall. The patch introduces substantial quality-of-life improvements alongside security fixes, including new customization options for the taskbar and Start menu, simplified Windows Search functionality, and enhanced File Explorer performance. Users appreciate the expanded feature set and the focus on responsiveness. However, some users report difficulty locating new features after installation, suggesting potential discoverability issues. The update is mandatory and contains critical security patches, which generally receives acceptance from the IT professional community despite the requirement to deploy it.

Known Issues

Disclaimer: We take measures to ensure that AI-generated content is of the highest possible quality, but we cannot guarantee its accuracy and recommend that users do their own independent research. Generated on 2026-09-11 01:13 PM

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