legacy modems

  1. Windows 11 KB5074109 Modem Driver Removal: Security Gains vs Compatibility Costs

    Microsoft’s January 2026 cumulative update for Windows 11, KB5074109, deliberately removes four long‑standing in‑box modem drivers — agrsm64.sys, agrsm.sys, smserl64.sys and smserial.sys — and that change has immediately disabled a measurable number of dial‑up, fax and telephony modems that...

  2. 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...
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    • driver security kb5074109 legacy modems modem drivers security vulnerabilities windows 11
    • Replies: 1
    • Forum: Windows News

  3. 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...
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    • boot failure boot failures boot issues cumulative update kb5074109 kernel driver security legacy hardware legacy modem legacy modems modem drivers modem drivers removal out of band updates patch management patch tuesday recovery tools security hardening security vulnerabilities servicing stack update system recovery troubleshooting unmountable boot volume update rollback vendor driver support windows 11 windows 11 boot issue windows 11 boot issues windows 11 update windows update windows updates winre winre recovery
    • Replies: 14
    • Forum: Windows News