Windows 11 KB5074109 & KB5073455 cumulative updates released
BleepingComputer • • general
Key Points:
- Microsoft has released the Windows 11 January 2026 Patch Tuesday cumulative updates KB5074109 and KB5073455 for versions 25H2/24H2 and 23H2, addressing security vulnerabilities, bugs, and adding minor new features.
- These mandatory updates include fixes for networking issues in Windows Subsystem for Linux and Azure Virtual Desktop, power management improvements for devices with Neural Processing Units, and enhancements to Secure Boot certificate deployment.
- The update removes support for certain modem drivers (agrsm64.sys, agrsm.sys, smserl64.sys, smserial.sys), which may cause dependent modem hardware to stop functioning in Windows 11.
- Windows Deployment Services (WDS) will no longer support hands
