Tag

Patch Tuesday

All articles tagged with #patch tuesday

technology10 days ago•3 min saved

Microsoft patches Windows 11 boot failure with February 2026 KB5077181

Microsoft says a Windows 11 boot bug that caused UNMOUNTABLE_BOOT_VOLUME errors on some commercial devices after security updates is fully fixed with the February 2026 Patch Tuesday security update KB5077181. The issue, tied to December 2025 updates and worsened by January 2026 KB5074109 (and related updates), affected Windows 11 25H2 and 24H2 on physical devices, not home users or virtual machines; an initial mitigation arrived in KB5074105 on Jan 29. Devices already unbootable before the fix may still need remediation, and enterprise customers should contact Microsoft Support for Business for assistance.

via BleepingComputer|

#boot-failure #enterprise #patch-tuesday

technology1 month ago•3 min saved

Microsoft probes Windows 11 boot crash tied to January 2026 updates

Microsoft is investigating reports that some Windows 11 devices (versions 25H2 and 24H2 after KB5074109) fail to boot with the UNMOUNTABLE_BOOT_VOLUME error following the January 2026 security updates. Affected systems display a black crash screen and require manual recovery; reports are limited to physical devices so far. Microsoft is collecting feedback via the Feedback Hub and will confirm if the issue is a Windows update regression; no virtual machine reports have been noted.

via BleepingComputer|

#boot-failure #kb5074109 #patch-tuesday

technology1 month ago•47 min saved

January 2026 patch risks booting on some Windows 11 PCs

Microsoft says a subset of Windows 11 devices may fail to boot after installing the January 2026 security update (KB5074109), showing a black screen with the UNMOUNTABLE_BOOT_VOLUME stop code. The company has released emergency out-of-band updates and advises using the Windows Recovery Environment to uninstall the patch for recovery. This issue follows a spate of Patch Tuesday bugs affecting various Windows versions, with Microsoft investigating fixes and workarounds.

via Windows Central|

#boot-failure #kb5074109 #patch-tuesday

technology1 month ago•47 min saved

Microsoft pushes a second Windows 11 emergency update to fix Patch Tuesday chaos

Microsoft released a second emergency out-of-band update for Windows 11 (KB5078127) to fix a bug that left Outlook and cloud-based apps like OneDrive and Dropbox unusable after January Patch Tuesday; the update, targeting 24H2 and 25H2, includes fixes for unresponsiveness when opening/saving to cloud storage and follows an earlier OOB patch that resolved remote desktop and hibernation issues but briefly broke app compatibility. The rollout spans multiple Windows editions, with guidance to check the Windows release health dashboard for current status.

via Windows Central|

#kb5078127 #microsoft #out-of-band

technology1 month ago•6 min saved

January 2026 Windows Update Sparks Fresh Bugs, Hitting Outlook and Cloud Apps

The January Patch Tuesday Windows update, designed to fix security flaws, also introduced several fresh bugs: Outlook freezing/not responding (with PSTs on OneDrive), app errors when opening cloud-saved files, and licensing/Store issues for some apps. Microsoft released at least one out-of-band fix for Remote Desktop and Secure Launch, but many problems remain unresolved. Workarounds include using Outlook on the web, moving PST files off OneDrive, or uninstalling the update while awaiting a fuller fix.

via ZDNET|

#bugs #onedrive #outlook

technology1 month ago•53 min saved

Windows 11 Patch KB5074109 Triggers Widespread System Instability

Microsoft’s January 2026 Windows 11 security update KB5074109, covering versions 24H2 and 25H2, includes over 100 fixes and three zero-days but has caused widespread stability problems—lockups, black screens, and graphics-related app failures; admins are advised to uninstall the update or use Known Issue Rollback, with GPU driver updates and certain cloud/remote desktop issues noted in ongoing remediation.

via Cyber Security News|

#graphics-drivers #kb5074109 #patch-tuesday

technology1 month ago•68 min saved

Windows 11 January 2026 update fixes NPU battery drain and tightens Secure Boot rollout

Microsoft’s January 2026 Patch Tuesday for Windows 11 (KB5074109) is rolling out for 24H2/25H2, fixing a power issue where Neural Processing Units could stay on idle and enabling a phased rollout of new Secure Boot certificates. The update also addresses networking fixes in WSL, Azure Virtual Desktop RemoteApp issues, removes certain modem drivers, and updates WinSqlite3.dll.

via Windows Central|

#battery-life #npu #patch-tuesday

technology1 month ago•5 min saved

Microsoft Patches 114 Flaws in January 2026 Update, One Exploited in the Wild

Microsoft released its January 2026 security update, fixing 114 vulnerabilities (8 critical; 106 important), including one actively exploited in the wild: CVE-2026-20805 in Desktop Window Manager that could disclose memory details via ALPC. CISA has added this to KEV with a February 3 patch deadline for federal agencies. Other notable fixes include a Secure Boot certificate-expiration bypass (CVE-2026-21265), removal of vulnerable Agere modem drivers tied to older CVEs, and a critical VBS Enclave privilege-escalation (CVE-2026-20876). Edge and other vendor patches accompany the update.

via The Hacker News|

#cve-2026-20805 #desktop-window-manager #patch-tuesday

security1 month ago•4 min saved

January Patch Tuesday hits with 113 fixes, including an actively exploited DWM zero-day

Microsoft’s January Patch Tuesday rolls out updates for at least 113 vulnerabilities across Windows and supported software, eight rated critical. The standout is CVE-2026-20805 in Desktop Window Manager, which is already being exploited in the wild and can be chained with other flaws. Office remote-code execution bugs CVE-2026-20952/20953 are fixed, while legacy Agere modem drivers agrsm64.sys/agrsm.sys were removed due to exploit activity linked to CVE-2023-31096. A separate critical CVE-2026-21265 exposes a Secure Boot bypass tied to expired root certificates, requiring careful BIOS/bootloader updates. Firefox/Firefox ESR patched 34 flaws including CVE-2026-0891/0892, and Chrome WebView CVE-2026-0628 was fixed; Edge/Chrome updates are expected. Per-patch guidance from SANS ISC emphasizes timely patching and checking for install issues.

via Krebs on Security|

#cve-2026-20805 #office-vulnerability #patch-tuesday

technology1 month ago•4 min saved

Windows 10 security-only KB5073724 update patches three zero-days and Secure Boot certs

Microsoft released the Windows 10 KB5073724 security update, addressing 114 vulnerabilities including three zero-days, and updating Secure Boot certificates. The update also removes certain Agere modem drivers and includes a WinSqlite3.dll fix. It targets devices in the ESU program or LTSC and does not add new features, raising builds to 19045.6809 (19044.6809 for LTSC 2021). Note that affected modem hardware will stop working due to removed drivers; Microsoft reports no known issues at this time.

via BleepingComputer|

#kb5073724 #patch-tuesday #secure-boot

technology1 month ago•8 min saved

Microsoft's January 2026 Patch Tuesday: 3 zero-days and 114 fixes

Microsoft's January 2026 Patch Tuesday patches 114 vulnerabilities and three zero-days across Windows, Azure, Office, Edge, and related components, including elevation of privilege, information disclosure, and remote code execution flaws. Users should apply the updates promptly to mitigate risk.

via BleepingComputer|

#cybersecurity #microsoft #patch-tuesday

technology3 months ago•7 min saved

Microsoft's November 2025 Patch Fixes Zero-Day and 63 Flaws

Microsoft's November 2025 Patch Tuesday addresses 63 security flaws, including one actively exploited zero-day in the Windows Kernel, with critical updates for various vulnerabilities across Microsoft products. The update emphasizes the importance of upgrading from unsupported Windows 10 to Windows 11 and highlights recent security patches from other vendors. A webinar on modern patch management is also promoted.

via BleepingComputer|

#microsoft #patch-tuesday #security-flaws

technology3 months ago•5 min saved

Windows 11 November Update Introduces Redesigned Start Menu and Enhanced Features

Microsoft released mandatory Windows 11 KB5068861 and KB5068865 cumulative updates for versions 25H2/24H2 and 23H2, including security patches, bug fixes, and new features like a redesigned Start menu UI, updated battery icons, and enhanced security protections. The updates also mark the end of support for Windows 11 23H2 and will continue to roll out gradually, with no known new issues.

via BleepingComputer|

#new-features #patch-tuesday #security-patches

technology3 months ago•3 min saved

Windows 11 November Update Introduces Redesigned Start Menu and Battery Features

Microsoft's November Windows 11 update (KB5068861) introduces a more customizable Start menu, improvements to the battery icon, and fixes for the Task Manager bug that caused it to run in the background, along with various other system fixes.

via Windows Central|

#patch-tuesday #start-menu #task-manager

technology4 months ago•2 min saved

Microsoft Windows Security Updates and End-of-Life Transitions

Microsoft has released critical security updates addressing a record 196 vulnerabilities, including two zero-day exploits (CVE-2025-59230 and CVE-2025-24990), with the Cybersecurity and Infrastructure Security Agency (CISA) urging federal agencies to update within two weeks to mitigate risks.

via Forbes|

#cve-2025-24990 #cve-2025-59230 #cybersecurity-cisa