KB5066836: Overview with user sentiment and feedback

Overview

This security update for Windows 10 version 1607 and Windows Server 2016 includes several fixes and quality improvements. The update addresses issues with Windows Remote Management, fax modem drivers, cryptography, and File Explorer. It also includes a stability fix for devices that experienced issues after installing previous updates.

General Purpose

The key changes included in this update are:- Fixed an issue that caused PowerShell Remoting and Windows Remote Management (WinRM) commands to time out after 600 seconds.- Removed the ltmdm64.sys driver, which means fax modem hardware dependent on this driver will no longer work in Windows.- Enforced a security hardening improvement by requiring the use of Key Storage Provider (KSP) instead of Cryptographic Service Provider (CSP) for RSA-based smart card certificates. This may cause issues with smart card authentication that can be resolved through steps on the Windows Release Health site.- Automatically disabled the preview feature in File Explorer for files downloaded from the internet, to enhance security and prevent vulnerabilities when previewing potentially unsafe files.

General Sentiment

Overall, this update appears to be a routine security and quality update for Windows 10 version 1607 and Windows Server 2016. The changes are focused on improving security and stability, though the removal of the fax modem driver may impact some users still relying on that functionality. The required use of KSP over CSP for smart cards could also cause authentication issues for some organizations, though Microsoft has provided guidance on resolving those problems. Based on the information provided, this update does not seem to introduce any major regressions or widespread problems, but as with any update, thorough testing in a non-production environment is recommended before deploying to production systems.

Known Issues

• None reported

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 01:33 AM

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