modem drivers

  1. Windows 11 KB5074109 Removes Four Legacy Modem Drivers — Security vs Compatibility

    Microsoft’s January cumulative for Windows 11 deliberately removed four legacy modem drivers from the in‑box image—breaking modem-based telephony and POS appliances for a measurable subset of users—and the only immediate workaround for most affected systems is to uninstall KB5074109 and pause...
  2. Windows 11 KB5074109 Boot Failures and WinRE Recovery Guide

    Microsoft released its January cumulative for Windows 11 (KB5074109) on January 13, 2026 — and within days a series of serious regressions began surfacing, from brief black screens on some Nvidia-equipped machines to full startup failures that print UNMOUNTABLE_BOOT_VOLUME (Stop Code 0xED) and...
  3. Windows 11 Shutdown Bug in January 2026 Update with Secure Launch KB5073455

    A patch released in January 2026 is causing some Windows 11 PCs to restart when users try to shut them down or put them to sleep, and Microsoft has published an emergency workaround while it works on a permanent fix. Background / Overview Microsoft shipped its January cumulative updates on...
  4. Windows 11 KB5073455: Secure Boot cert migration, legacy modem removal, and RDP fixes

    Microsoft's January 13, 2026 cumulative update for Windows 11 (KB5073455, OS Build 22631.6491) closes several security gaps, removes legacy modem drivers with known high-severity vulnerabilities, and introduces a controlled, phased mechanism to deliver replacement Secure Boot certificates ahead...