kb5070773

About this tag
KB5070773 is an out-of-band emergency cumulative update released by Microsoft on October 20, 2025, to fix a critical regression in the Windows Recovery Environment (WinRE) caused by the October 14, 2025 security update KB5066835. The earlier update broke USB keyboard and mouse input inside WinRE, making recovery options inaccessible during BitLocker recovery or system repair scenarios. KB5070773 restores USB input functionality in WinRE on Windows 11 versions 24H2 and 25H2, as well as Windows Server 2025. The update is cumulative and replaces KB5066835. Some users have reported installation errors, such as 0x800f0991, when applying KB5070773. Administrators are advised to inventory systems on OS build 26100.6899 and apply the patch to prevent recovery-path failures.

  1. Fix Windows Server 2025 WinRE USB Input Bug After KB5066835—Patch to KB5070773

    If your Windows Server 2025 machine installed the October 14, 2025 security update KB5066835, update it to KB5070773 from October 20, 2025 or any later cumulative update before a BitLocker recovery event forces you into Windows Recovery Environment with no working USB input. The immediate admin...
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    • bitlocker recovery kb5070773 windows server 2025 winre usb input
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    • Forum: Windows News

  2. Windows 11 WinRE USB Input Restored — Out-of-Band KB5070773 Fix

    Microsoft has shipped an out‑of‑band patch that restores USB keyboard and mouse support inside the Windows Recovery Environment (WinRE) after the October security rollup left many systems unable to navigate recovery options using USB input. The emergency fix, published as KB5070773 and delivered...
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    • kb5070773 recovery usb windows 11 winre
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    • Forum: Windows News

  3. Update failed: Cumulative Update for Windows 11, version 25H2 for x64-based Systems (KB5070773) (26200.6901)

    Following on from thread: 'Logitech MX Master 3 losing connectivity' https://windowsforum.com/threads/logitech-mx-master-3-losing-connectivity.385305/ Install error - 0x800f0991 Last series of Powershell commands I tried: PS C:\> wusa...

  4. Windows 11 October 2025 Patch Tuesday Crashes WinRE; Emergency KB5070773 Fix

    Microsoft’s October Patch Tuesday rollout cratered into an operational crisis for many Windows 11 users and administrators after the October 14 cumulative update (KB5066835) introduced multiple high‑impact regressions — most notably rendering USB keyboards and mice useless inside the Windows...
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    • emergency update kb5070773 oob update out-of-band patch out-of-band update patch patch management recovery environment recovery media safe os smart card system restore usb input usb input fix windows 11 windows 11 winre windows recovery windows update winre winre recovery winre usb wsus
    • Replies: 10
    • Forum: Windows News

  5. Windows 11 WinRE Outage: October 2025 Patch and DoJ SA Impact

    The South African Department of Justice and Constitutional Development confirmed its systems were disrupted by a global Windows 11 fault tied to a recent Microsoft security update, joining a growing list of public and private organisations grappling with recovery problems after the October 2025...

  6. Windows 11 October 2025 KB5066835 Regressions: Localhost HTTP/2 and WinRE USB Input

    Microsoft has acknowledged a serious regression in its October 14, 2025 cumulative update for Windows 11 (KB5066835) and is rolling an emergency fix after the patch broke two very different but critical areas of the platform: local HTTP/2 (localhost) connections used by developers and many...
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    • http sys localhost http sys outage http.sys http2 loopback it resilience kb5066835 kb5070773 localhost http2 localhost networking microsoft patch out-of-band update patch patch management patch rollback safe os windows 11 windows update winre recovery winre usb
    • Replies: 5
    • Forum: Windows News

  7. Windows 11 WinRE Input Failure Fixed by KB5070773 Out-of-Band Update

    Microsoft has rushed an out‑of‑band emergency update to Windows 11 after October’s Patch Tuesday left the Windows Recovery Environment (WinRE) effectively unusable on many systems — USB keyboards and mice stop responding inside WinRE, preventing basic recovery actions and forcing Microsoft to...
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    • kb5070773 out-of-band update windows 11
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  8. Windows 11 WinRE USB input fixed by emergency KB5070773

    Microsoft pushed an emergency fix this week after an October cumulative update left many Windows 11 systems unable to accept USB keyboard or mouse input inside the Windows Recovery Environment (WinRE), a failure that turned the OS’s recovery UI into a non‑interactive screen — the out‑of‑band...

  9. KB5070773 Emergency Update Restores USB Input in Windows 11 WinRE

    Microsoft has issued an emergency out‑of‑band cumulative update — KB5070773 — to fix a critical problem that left many Windows 11 PCs unable to use USB keyboards and mice inside the Windows Recovery Environment (WinRE), a failure that made built‑in recovery options effectively inaccessible for...
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    • kb5070773 out of band update windows eleven winre recovery
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    • Forum: Windows News

  10. Windows 11 WinRE Input Break After KB5066835 Patch

    Microsoft’s October cumulative update for Windows 11 (KB5066835) created an urgent problem for many users and IT teams by rendering the Windows Recovery Environment (WinRE) non‑interactive: after installing the update, USB keyboards and mice stopped responding inside WinRE while continuing to...
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    • avx emulation cryptography emergency patch government hid devices http.sys http2 june 2025 update kb5066835 kb5070773 kb5070773 out of band localhost microsoft patch out-of-band out-of-band patch out-of-band update patch management prism emulator recovery recovery environment recovery media recovery tools recovery usb safe os safe os dynamic update smart card software update usb input usb input fix windows 11 windows 11 winre windows on arm windows recovery windows update winre winre recovery winre usb winre usb input
    • Replies: 19
    • Forum: Windows News

  11. Windows 25H2 trouble

    I saw that 25H2 was available and installed it. And now I regret it because my installation has become a lot slower. When I look in the control panel under Windows Update the information is confusing. It says that 25H2 is installed but it also says that it is available for installation.

  12. Windows WinRE Input Restored: Out-of-Band KB5070773 Fix for 24H2 and 25H2

    Microsoft has quietly shipped an out‑of‑band fix that restores USB keyboard and mouse input inside the Windows Recovery Environment (WinRE) after an October cumulative update left many machines with a non‑interactive recovery UI, and administrators and power users should treat this as a priority...
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    • emergency update kb5070773 out-of-band update recovery environment recovery usb safe os usb input fix windows 11 windows 11 winre windows recovery winre winre input winre recovery winre usb
    • Replies: 4
    • Forum: Windows News