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The Update Bureau

Windows 10

Windows 10 updates

All published releases for Windows 10, newest first: what each update changes, whether to install it and any confirmed known issues. Latest release: November 13, 2026.

14 active known issues →

Windows 10 updates

  • Windows 10 1607 Windows 10 1607 Security update Also for Windows Server
    Zero-day

    KB5041773

    Exploited Windows flaws addressed; Linux dual-boot booting can fail

    The update addresses security issues, including four exploited vulnerabilities, and changes Secure Boot behavior that can prevent Linux from starting on some dual-boot devices.

    As of March 31, 2026, this update is no longer available through the Microsoft Update Catalog or other release channels. Microsoft recommends updating devices to the latest version of Windows.
    Known issues: 1 open
    • After installing this security update, you might face issues with booting Linux if you have enabled the dual-boot setup for Windows and Linux in your device.

    Key changes 38 CVEs · 6 changes

    • Improved Lock screen: The “Use my Windows user account” checkbox is not available on the lock screen when connecting to Wi-Fi.
    • Improved Secure Boot Advanced Targeting (SBAT) and Linux Extensible Firmware Interface (EFI): Windows blocks vulnerable Linux boot managers. Older Linux installation images might not boot after this change.
    • Improved Domain Name System (DNS): DNS server security is hardened. If domain configurations are not up to date, DNS requests might return SERVFAIL or time out.

    Read update Source: Microsoft

    Build
    14393.7259
    Security
    38 fixed · 5 critical · 4 exploited
  • Windows 10 22H2 Windows 10 22H2 Optional preview
    Preview

    KB5040525

    Fixes TCP hangs, printing failures, and Windows Backup errors

    Fixes several Windows 10 22H2 problems, including TCP hangs during file transfers, printing failures, and Windows Backup failures on devices with an EFI system partition. It also has a known profile-picture issue.

    Check the newer update, KB5041582
    Known issues: 1 open
    • After installing this update, you might be unable to [change your user account profile picture](https://support.microsoft.com/en-us/windows/change-your-account-picture-3645cdc7-acab-49d2-76a9-4ce7e5e…

    Key changes 12 changes

    • Improved Windows Kernel Vulnerable Driver Blocklist file (DriverSiPolicy.p7b): The vulnerable-driver blocklist includes more drivers at risk of being used in BYOVD attacks.
    • Improved DHCP Option 235: Some devices might not be able to use Microsoft Connected Cache nodes they find and might download updates and apps from the public int...
    • Fix FrameShutdownDelay: The browser now respects the configured FrameShutdownDelay value.

    Read update Source: Microsoft

    Build
    19045.4717
    Restart
    Required
  • Windows 10 21H2 / 22H2 Windows 10 21H2 / 22H2 Security update
    Zero-day

    KB5040427

    Exploited MSHTML spoofing flaw patched; RADIUS and BitLocker changes

    The update addresses 75 vulnerabilities, including an exploited MSHTML spoofing flaw and a critical Windows Imaging Component remote code execution flaw. It also changes RADIUS, BitLocker, and shortcut-icon policy behavior.

    As of March 31, 2026, this update is no longer available through Microsoft Update Catalog or other release channels. Microsoft recommends updating devices to the latest Windows version.
    Known issues: 1 open
    • After installing this update, you might be unable to [change your user account profile picture](https://support.microsoft.com/en-us/windows/change-your-account-picture-3645cdc7-acab-49d2-76a9-4ce7e5e…

    Key changes 75 CVEs · 4 changes

    • Improved BitLocker: The default Secure Boot validation profile includes additional PCR measurements.
    • Improved File shortcut icons: IT administrators must configure a policy to allow remote paths in shortcut icons. Without it, icons on Start, the desktop, and the tas...
    • Improved Servicing stack: The component that installs Windows updates receives quality improvements to help devices reliably receive and install Microsoft update...

    Read update Source: Microsoft

    Builds
    19044.4651 · 19045.4651
    Security
    75 fixed · 1 critical · 1 exploited
  • Windows 10 1809 Windows 10 1809 Security update Also for Windows Server
    Zero-day

    KB5040430

    Exploited MSHTML spoofing flaw patched; update is expired

    Addresses the exploited MSHTML spoofing flaw CVE-2024-38112 and changes BitLocker and other Windows behavior. It is no longer available from Microsoft as of March 31, 2026.

    As of March 31, 2026, this update is no longer available through Microsoft Update Catalog or other release channels. Microsoft recommends updating devices to the latest version of Windows.

    Key changes 72 CVEs · 6 changes

    • Improved Windows Local Administrator Password Solution (LAPS): LAPS post-authentication actions occur at restart instead of at the end of the grace period.
    • Improved Remote Authentication Dial-In User Service (RADIUS) protocol: Addresses an issue related to MD5 collisions in the RADIUS protocol.
    • Improved BitLocker: The default Secure Boot validation profile now includes PCR 4 alongside PCR 7 and 11.

    Read update Source: Microsoft

    Build
    17763.6054
    Security
    72 fixed · 1 critical · 1 exploited
  • Windows 10 1607 Windows 10 1607 Security update Also for Windows Server
    Zero-day

    KB5040434

    Exploited MSHTML spoofing flaw addressed

    The update addresses 69 vulnerabilities, including an exploited MSHTML spoofing flaw and a critical Windows Imaging Component remote-code-execution flaw. It has been unavailable from Microsoft since March 31, 2026.

    KB5040434 has been unavailable from the Microsoft Update Catalog and other release channels since March 31, 2026.

    Key changes 69 CVEs · 4 changes

    • Improved Republic of Turkey name: The official country name is now the Republic of Türkiye.
    • Improved BitLocker: The default Secure Boot validation profile uses additional PCR measurements.
    • Improved File shortcut icons (.LNK files): Icons for shortcuts to remote paths might not appear in the Start menu, on the desktop, or on the taskbar unless administrators configu...

    Read update Source: Microsoft

    Build
    14393.7159
    Security
    69 fixed · 1 critical · 1 exploited
  • Windows 10 22H2 Windows 10 22H2 Optional preview
    Preview

    KB5039299

    Copilot becomes a movable app; taskbar and input issues addressed

    This optional preview pins Copilot as a resizable, movable app on eligible PCs and addresses several Windows 10 issues, including taskbar jump-list actions and Japanese text input.

    Check the newer update, KB5040525
    Known issues: 1 open
    • After installing this update, you might be unable to [change your user account profile picture](https://support.microsoft.com/en-us/windows/change-your-account-picture-3645cdc7-acab-49d2-76a9-4ce7e5e…

    Key changes 12 changes

    • New Copilot: On eligible new PCs, Copilot is pinned to the taskbar and works like an app that you can resize, move, and snap.
    • Improved Mobile device management (MDM): When a device is enrolled, more details are sent to help identify its model and manufacturer.
    • Improved Country and Operator Settings Asset (COSA): Mobile operator profiles are updated for certain operators.

    Read update Source: Microsoft

    Build
    19045.4598
    Restart
    Required
  • Windows 10 21H2 / 22H2 Windows 10 21H2 / 22H2 Security update
    Zero-day

    KB5039211

    Critical MSMQ flaw and exploited Mark of the Web bypass patched

    Addresses 28 vulnerabilities, including a critical MSMQ remote-code-execution flaw and an exploited Mark of the Web security bypass. It also addresses two LSASS problems and changes how File Explorer tags files from untrusted locations.

    As of March 31, 2026, this update is no longer available from Microsoft release channels. Windows 10, version 21H2 Enterprise, Education, IoT Enterprise, and Enterprise multi-session editions also reached end of service on June 11, 2024.
    Known issues: 3 open
    • After installing this update, you might be unable to [change your user account profile picture](https://support.microsoft.com/en-us/windows/change-your-account-picture-3645cdc7-acab-49d2-76a9-4ce7e5e…
    • Windows devices using more than one (1) monitor might experience issues with desktop icons moving unexpectedly between monitors or other icon alignment issues when attempting to use Copilot in Window…
    • Copilot in Windows (in preview) is not currently supported when your taskbar is located vertically on the right or left of your screen.

    Key changes 28 CVEs · 5 changes

    • Improved Windows 10, version 22H2: This build includes the improvements from the supported Windows 10, version 21H2 editions.
    • Improved File Explorer: File Explorer adds the Mark of the Web tag to files and folders from untrusted locations. This can update the file's LastWriteTime time...
    • Improved Servicing stack: The component that installs Windows updates receives quality improvements to help devices reliably receive and install updates.

    Read update Source: Microsoft

    Builds
    19044.4529 · 19045.4529
    Security
    28 fixed · 1 critical · 1 exploited
  • Windows 10 1809 Windows 10 1809 Security update Also for Windows Server
    Zero-day

    KB5039217

    Exploited Mark of the Web bypass addressed; LSASS issues fixed

    Addresses 28 vulnerabilities, including an exploited Mark of the Web security-feature bypass and a critical MSMQ remote-code-execution flaw. It also fixes two LSASS problems and updates curl.exe.

    As of March 31, 2026, this update is no longer available through Microsoft release channels; Microsoft recommends updating devices to the latest Windows version.

    Key changes 28 CVEs · 5 changes

    • Improved curl.exe: The version of curl.exe included with Windows is now 8.7.1.
    • Improved File Explorer: Files and folders from untrusted locations receive a Mark of the Web tag. Their LastWriteTime timestamp might change, which can affect...
    • Improved Servicing stack: The component that installs Windows updates receives quality improvements.

    Read update Source: Microsoft

    Build
    17763.5936
    Security
    28 fixed · 1 critical · 1 exploited
    Restart
    Required
  • Windows 10 1607 Windows 10 1607 Security update Also for Windows Server
    Zero-day

    KB5039214

    Exploited Mark of the Web bypass addressed; LSASS issues fixed

    The update addresses 24 vulnerabilities, including an actively exploited Mark of the Web security bypass, and two LSASS problems. It has been unavailable since March 31, 2026.

    As of March 31, 2026, this update is no longer available from Microsoft Update Catalog or other release channels. Microsoft recommends updating devices to the latest version of Windows.

    Key changes 24 CVEs · 3 changes

    • New File Explorer: Files and folders from untrusted locations get an internet-origin tag. The tag updates the file’s LastWriteTime timestamp, which might...
    • Fix LSASS: The Windows security process stops responding on Windows servers after the April 2024 security updates.
    • Fix LSASS: The Windows security process can leak memory during a domain policy communication.

    Read update Source: Microsoft

    Build
    14393.7070
    Security
    24 fixed · 1 critical · 1 exploited
  • Windows 10 22H2 Windows 10 22H2 Optional preview
    Preview

    KB5037849

    Android photos can open in Snipping Tool; Copilot issues remain

    Adds a way to open Android photos and screenshots in Snipping Tool. It also addresses several Windows issues, while Copilot problems on multi-monitor setups and vertical taskbars remain open.

    Check the newer update, KB5039299
    Known issues: 3 open
    • After installing this update, you might be unable to [change your user account profile picture](https://support.microsoft.com/en-us/windows/change-your-account-picture-3645cdc7-acab-49d2-76a9-4ce7e5e…
    • Windows devices using more than one (1) monitor might experience issues with desktop icons moving unexpectedly between monitors or other icon alignment issues when attempting to use Copilot in Window…
    • Copilot in Windows (in preview) is not currently supported when your taskbar is located vertically on the right or left of your screen.

    Key changes 11 changes

    • New Snipping Tool: After you link an Android phone to your PC, a prompt can let you open a photo or screenshot from the phone in Snipping Tool.
    • Improved Country and Operator Settings Asset (COSA): Mobile operator settings profiles are brought up to date for certain operators.
    • Improved Servicing stack: The included servicing stack update improves the component that installs Windows updates.

    Read update Source: Microsoft

    Build
    19045.4474
    Restart
    Required
  • Windows 10 1809 Windows 10 1809 Out-of-band update Also for Windows Server
    Out-of-band

    KB5039705

    English (US) language-pack errors addressed; update expired

    Addresses installation failures tied to the English (United States) language pack, but it has been unavailable since March 31, 2026.

    KB5039705 has been unavailable from the Microsoft Update Catalog and other release channels since March 31, 2026. Microsoft recommends updating devices to the latest version of Windows.

    Key changes 2 changes

    • Improved Servicing stack: The component that installs Windows updates gets quality improvements to help devices receive and install Microsoft updates.
    • Fix English (United States) language pack: The update addresses installation failures that can occur with the English (United States) language pack.

    Read update Source: Microsoft

    Build
    17763.5830
  • Windows 10 21H2 / 22H2 Windows 10 21H2 / 22H2 Security update
    Zero-day

    KB5037768

    Exploited MSHTML and DWM flaws patched; VPN failures addressed

    Fixes 47 vulnerabilities, including two exploited flaws in MSHTML and the DWM Core Library, and addresses a VPN connection problem.

    As of March 31, 2026, this update is no longer available through Microsoft Update Catalog or other release channels; Microsoft recommends updating to the latest Windows version.
    Known issues: 3 open
    • After installing this update, you might be unable to [change your user account profile picture](https://support.microsoft.com/en-us/windows/change-your-account-picture-3645cdc7-acab-49d2-76a9-4ce7e5e…
    • Windows devices using more than one (1) monitor might experience issues with desktop icons moving unexpectedly between monitors or other icon alignment issues when attempting to use Copilot in Window…
    • Copilot in Windows (in preview) is not currently supported when your taskbar is located vertically on the right or left of your screen.

    Key changes 47 CVEs · 5 changes

    • Improved Windows 10, version 22H2: This build includes the improvements from supported Windows 10, version 21H2 editions.
    • Improved Servicing stack: Improves the component that installs Windows updates, helping devices receive and install Microsoft updates reliably.
    • Fix VPN: Addresses a known issue that might cause your VPN connection to fail after the April 9, 2024 update or later.

    Read update Source: Microsoft

    Builds
    19044.4412 · 19045.4412
    Security
    47 vulnerabilities fixed · 2 actively exploited
  • Windows 10 1809 Windows 10 1809 Security update Also for Windows Server
    Zero-day

    KB5037765

    Exploited MSHTML and DWM flaws; IE mode and VPN fixes

    It fixes 45 security vulnerabilities, including exploited flaws in MSHTML and DWM, and addresses IE mode and VPN failures. Installation might fail on some devices; KB5039705 resolves that issue.

    As of March 31, 2026, this update is no longer available from Microsoft Update Catalog or other release channels. Microsoft recommends updating devices to the latest version of Windows.

    Key changes 45 CVEs · 8 changes

    • Improved DNS Server: DNS validation uses a default limit of 1,000 computations, which DNS Server administrators can change.
    • Improved Windows Kernel Vulnerable Driver Blocklist: The vulnerable driver blocklist gains drivers that could be used in BYOVD attacks.
    • Improved Servicing stack: Includes quality improvements to the component that installs Windows updates.

    Read update Source: Microsoft

    Build
    17763.5820
    Security
    45 vulnerabilities fixed · 2 actively exploited
  • Windows 10 1607 Windows 10 1607 Security update Also for Windows Server
    Zero-day

    KB5037763

    Exploited MSHTML bypass and DWM privilege flaws patched

    Addresses 30 vulnerabilities, including exploited flaws in the MSHTML platform and DWM Core Library. It also addresses VPN, domain controller, and Virtual Secure Mode issues.

    As of March 31, 2026, this update is no longer available through the Microsoft Update Catalog or other release channels. Microsoft recommends updating devices to the latest version of Windows.

    Key changes 30 CVEs · 5 changes

    • Improved Currency: Supports Croatia’s change from the kuna to the euro.
    • Improved DNS Server: Sets the NSEC3 validation limit in a recursive resolver to 1,000 computations by default.
    • Fix VPN: Addresses an issue that might cause your VPN connection to fail after installing the update dated April 9, 2024, or later.

    Read update Source: Microsoft

    Build
    14393.6981
    Security
    30 vulnerabilities fixed · 2 actively exploited
  • Windows 10 22H2 Windows 10 22H2 Optional preview
    Preview

    KB5036979

    Account alerts arrive; Bluetooth earbuds and startup issues get fixes

    Adds Microsoft account notifications and improves lock-screen Widgets and Search. It also addresses unstable Bluetooth earbud connections and several crashes, memory leaks, and system issues.

    Check the newer update, KB5037849
    Known issues: 3 open
    • After installing this update, you might be unable to [change your user account profile picture](https://support.microsoft.com/en-us/windows/change-your-account-picture-3645cdc7-acab-49d2-76a9-4ce7e5e…
    • Windows devices using more than one (1) monitor might experience issues with desktop icons moving unexpectedly between monitors or other icon alignment issues when attempting to use Copilot in Window…
    • Copilot in Windows (in preview) is not currently supported when your taskbar is located vertically on the right or left of your screen.

    Key changes 18 changes

    • New Settings: Notifications about your Microsoft account begin appearing in Settings and the Start menu.
    • Improved Widgets: Widgets on the lock screen become more reliable and support more visuals and customization.
    • Improved Windows Search: Search becomes more reliable, makes installed apps easier to find, and provides a personalized app search experience.

    Read update Source: Microsoft

    Build
    19045.4355
    Restart
    Required
  • Windows 10 21H2 / 22H2 Windows 10 21H2 / 22H2 Security update
    Zero-day

    KB5036892

    Exploited proxy-driver spoofing flaw patched; Copilot limits remain

    Addresses 63 security vulnerabilities, including an actively exploited proxy-driver spoofing flaw. It also lists open Copilot and profile-picture issues.

    As of March 31, 2026, this update is no longer available from Microsoft Update Catalog or other release channels; Microsoft recommends updating to the latest Windows version.
    Known issues: 3 open
    • After installing this update, you might be unable to [change your user account profile picture](https://support.microsoft.com/en-us/windows/change-your-account-picture-3645cdc7-acab-49d2-76a9-4ce7e5e…
    • Windows devices using more than one (1) monitor might experience issues with desktop icons moving unexpectedly between monitors or other icon alignment issues when attempting to use Copilot in Window…
    • Copilot in Windows (in preview) is not currently supported when your taskbar is located vertically on the right or left of your screen.

    Key changes 63 CVEs · 3 changes

    • Improved Windows 10, version 22H2: Version 22H2 includes all improvements from the supported Windows 10 version 21H2 editions.
    • Improved Windows operating system: The update includes miscellaneous security improvements to internal operating system functionality.
    • Improved Servicing stack: The component that installs Windows updates receives quality improvements intended to make it more reliable.

    Read update Source: Microsoft

    Builds
    19044.4291 · 19045.4291
    Security
    63 vulnerabilities fixed · 1 actively exploited
  • Windows 10 1809 Windows 10 1809 Security update Also for Windows Server
    Zero-day

    KB5036896

    Exploited proxy-driver spoofing flaw addressed; touch keyboard fixed

    Addresses 60 vulnerabilities, including the exploited and publicly disclosed CVE-2024-26234 proxy-driver spoofing flaw, and fixes a touch keyboard opening problem. It is no longer available from Microsoft since March 31, 2026.

    As of March 31, 2026, this update is no longer available from the Microsoft Update Catalog or other release channels. Microsoft recommends updating devices to the latest version of Windows.

    Key changes 60 CVEs · 9 changes

    • Improved Daylight saving time: Time changes for daylight saving time in Palestine are supported.
    • Improved Daylight saving time: Time changes for daylight saving time in Kazakhstan are supported.
    • Improved Daylight saving time: Time changes for daylight saving time in Samoa are supported.

    Read update Source: Microsoft

    Build
    17763.5696
    Security
    60 vulnerabilities fixed · 1 actively exploited
  • Windows 10 1607 Windows 10 1607 Security update Also for Windows Server
    Zero-day

    KB5036899

    Exploited proxy-driver flaw addressed; Remote Desktop access improved

    The update addresses an actively exploited proxy-driver spoofing vulnerability and a Remote Desktop access problem. The VPN and domain-controller issues reported after installation were later addressed in KB5037763.

    As of March 31, 2026, this update is no longer available through the Microsoft Update Catalog or other release channels. Microsoft recommends updating devices to the latest version of Windows.

    Key changes 50 CVEs · 4 changes

    • Improved Daylight saving time: Clock changes in Palestine are supported.
    • Improved Daylight saving time: Clock changes in Kazakhstan are supported.
    • Improved Daylight saving time: Clock changes in Samoa are supported.

    Read update Source: Microsoft

    Build
    14393.6897
    Security
    50 vulnerabilities fixed · 1 actively exploited
  • Windows 10 22H2 Windows 10 22H2 Optional preview
    Preview

    KB5035941

    Desktop Spotlight and lock-screen content arrive; keyboard issue fixed

    Adds Windows Spotlight backgrounds and more lock-screen content, and addresses an issue that sometimes kept the touch keyboard from opening.

    Check the newer update, KB5036979
    Known issues: 2 open
    • Windows devices using more than one (1) monitor might experience issues with desktop icons moving unexpectedly between monitors or other icon alignment issues when attempting to use Copilot in Window…
    • Copilot in Windows (in preview) is not currently supported when your taskbar is located vertically on the right or left of your screen.

    Key changes 24 changes

    • New Desktop background: Windows Spotlight can show new images as your desktop wallpaper, with a Learn More button that opens Bing.
    • New Lock screen: The lock screen can show sports, traffic, and finance content in addition to weather.
    • New Windows 11 upgrade notice: Eligible devices might show a sign-in message inviting users to upgrade to Windows 11.

    Read update Source: Microsoft

    Build
    19045.4239
    Restart
    Required
  • Windows 10 1809 Windows 10 1809 Out-of-band update Also for Windows Server
    Out-of-band

    KB5037425

    Stops LSASS memory leaks that could restart domain controllers

    Addresses an LSASS memory leak that could cause domain controllers to stop responding and restart unexpectedly while handling Kerberos requests.

    Check the newer update, KB5039217

    Key changes 2 changes

    • Improved Servicing stack: Includes quality improvements to the component that installs Windows updates.
    • Fix Local Security Authority Subsystem Service (LSASS): Addresses a memory leak that might cause domain controllers to stop responding and restart unexpectedly while processing Kerberos authe...

    Read update Source: Microsoft

    Build
    17763.5579
    Restart
    Required
  • Windows 10 1607 Windows 10 1607 Out-of-band update Also for Windows Server
    Out-of-band

    KB5037423

    LSASS memory leak could trigger unexpected domain controller restarts

    Addresses an LSASS memory leak on domain controllers. If the leak becomes substantial, LSASS might stop responding and the controllers might restart unexpectedly.

    Check the newer update, KB5046612

    Key changes 1 change

    • Fix Local Security Authority Subsystem Service (LSASS): Addresses an LSASS memory leak on domain controllers. If the leak becomes substantial, LSASS might stop responding and the controllers...

    Read update Source: Microsoft

    Build
    14393.6800
    Restart
    Required
  • Windows 10 21H2 / 22H2 Windows 10 21H2 / 22H2 Security update

    KB5035845

    Hyper-V remote-code flaw addressed; Copilot icon issues remain

    Addresses 35 vulnerabilities, including two critical Hyper-V flaws. Copilot can still disrupt desktop icon placement on multi-monitor devices, and the update is no longer available from Microsoft’s release channels.

    Windows 10 version 21H2 Enterprise, Education, IoT Enterprise, and Enterprise multi-session editions reached end of service on June 11, 2024. Microsoft recommends moving to a newer Windows version to keep receiving security and quality updates.
    Known issues: 2 open
    • Windows devices using more than one (1) monitor might experience issues with desktop icons moving unexpectedly between monitors or other icon alignment issues when attempting to use Copilot in Window…
    • Copilot in Windows (in preview) is not currently supported when your taskbar is located vertically on the right or left of your screen.

    Key changes 35 CVEs · 4 changes

    • Improved Windows 10, version 22H2: Version 22H2 includes the improvements from supported Windows 10 version 21H2 editions.
    • Improved Windows 10, version 21H2: The update includes quality improvements that were part of KB5034843.
    • Improved Windows 10, version 21H2: Internal Windows functionality receives miscellaneous security improvements.

    Read update Source: Microsoft

    Builds
    19044.4170 · 19045.4170
    Security
    35 fixed · 2 critical
  • Windows 10 1809 Windows 10 1809 Security update Also for Windows Server

    KB5035849

    DC memory leak risk flagged; touch keyboard issue fixed

    Fixes a touch-keyboard opening problem and changes certificate-mapping support for some Active Directory domains. LSASS might leak memory on domain controllers after installation; KB5037425 addresses the issue.

    Key changes 34 CVEs · 3 changes

    • Improved Active Directory domains: Active Directory domains hosting MDM providers can transition from Compatibility mode to strong certificate mapping Enforcement mode.
    • Improved Servicing stack: The component that installs Windows updates gets quality improvements.
    • Fix Touch keyboard: The touch keyboard opens when it sometimes would not open.

    Read update Source: Microsoft

    Build
    17763.5576
    Security
    34 fixed · 2 critical
  • Windows 10 1607 Windows 10 1607 Security update Also for Windows Server

    KB5035855

    Critical Hyper-V flaws patched; update is no longer available

    Addresses 29 vulnerabilities, including two critical Hyper-V flaws. It has not been available from Microsoft release channels since March 31, 2026.

    As of March 31, 2026, this update is no longer available from the Microsoft Update Catalog or other release channels. Microsoft recommends updating devices to the latest version of Windows.

    Key changes 29 CVEs · 1 change

    • Improved Windows operating system: Internal Windows functions receive miscellaneous security improvements.
    • Critical CVE-2024-21407: Windows Hyper-V Remote Code Execution Vulnerability
    • Critical CVE-2024-21408: Windows Hyper-V Denial of Service Vulnerability

    Read update Source: Microsoft

    Build
    14393.6796
    Security
    29 fixed · 2 critical
  • Windows 10 22H2 Windows 10 22H2 Optional preview
    Preview

    KB5034843

    Share links to apps and keep games installed on other drives

    Adds direct sharing of URLs to apps and keeps games installed on secondary drives. It also fixes several sign-in, input, and Remote Desktop problems.

    Check the newer update, KB5035941
    Known issues: 2 open
    • Windows devices using more than one (1) monitor might experience issues with desktop icons moving unexpectedly between monitors or other icon alignment issues when attempting to use Copilot in Window…
    • Copilot in Windows (in preview) is not currently supported when your taskbar is located vertically on the right or left of your screen.

    Key changes 10 changes

    • New Windows share: You can share URLs directly to apps such as WhatsApp, Gmail, Facebook, and LinkedIn. Sharing to X is coming soon.
    • Improved Servicing stack: The component that installs Windows updates receives quality improvements.
    • Fix Games: Games installed on a secondary drive remain installed on that drive.

    Read update Source: Microsoft

    Build
    19045.4123
    Restart
    Required