KB5066793: Overview with user sentiment and feedback
Last Updated November 30, 2025
Probability of successful installation and continued operation of the machine
Overview
This October 2025 update for Windows 11 versions 23H2 and 22H2 addresses several security issues and includes quality improvements. The update enforces a security hardening change by requiring the use of Key Storage Provider (KSP) instead of Cryptographic Service Provider (CSP) for RSA-based smart card certificates. It also includes a fix for an issue affecting PowerShell Remoting and Windows Remote Management (WinRM) where commands could time out after 10 minutes. Additionally, this update removes the ltmdm64.sys driver, which means fax modem hardware dependent on this driver will no longer work in Windows.
General Purpose
The key purposes of this October 2025 update for Windows 11 versions 23H2 and 22H2 are:- Address security vulnerabilities in the Windows operating system- Enforce a security hardening improvement for RSA-based smart card certificates- Fix an issue affecting PowerShell Remoting and Windows Remote Management- Remove a driver that was causing compatibility issues for fax modem hardware- Deliver other quality improvements and bug fixes to enhance the overall Windows 11 experience
General Sentiment
The general sentiment around this October 2025 update for Windows 11 seems positive. The security improvements and fixes for known issues are welcomed by users, as they help enhance the overall stability and security of the operating system. However, the removal of the ltmdm64.sys driver may cause some inconvenience for users still relying on fax modem hardware. Overall, the update appears to be a worthwhile installation for most Windows 11 users to keep their systems up-to-date and secure.
Known Issues
- Some Digital TV and Blu-ray/DVD apps might not play protected content as expected after installing the August 29, 2025 Windows update (KB5064081) or later updates. This is due to issues with the Enhanced Video Renderer with HDCP enforcement or Digital Rights Management (DRM) for digital audio.- Streaming services are not affected by this issue.- A partial resolution has been provided in the September 2025 Windows update (KB5065789), but some apps using DRM for digital audio might still experience problems.
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 2025-11-30 07:13 PM
