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Hotpatching now available for 64-bit Arm architecture
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Windows
More enterprise environments can now experience the power of security updates that don’t require a restart. Hotpatching is now available for Windows 11, version 24H2 Arm64 devices. All you need to do is check your prerequisites, disable Compiled Hybrid PE (CHPE), and enroll these devices into a quality update policy with hotpatching enabled. When will this happen: Hotpatching for 64-bit Arm architecture is now generally available. How this will affect your organization: With hotpatching, your organization can benefit from: Faster compliance: Security updates are applied immediately, reducing the window of vulnerability. No downtime: Users stay productive—no forced restarts or interruptions. Smaller update payloads: Faster installs and easier update orchestration. Enterprise-grade control: Integrated with Microsoft Intune and Windows Autopatch for streamlined management. What you need to
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90-Day Reminder: Windows 10, version 22H2 end of servicing and Windows 10 2015 LTSB end of support
Major Change
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Services
Windows
On October 14, 2025, Windows 10, version 22H2 (Home, Pro, Enterprise, Education, and IoT Enterprise editions) will reach end of servicing. October 14, 2025 will also mark the end of support for Windows 10 2015 LTSB and Windows 10 IoT Enterprise LTSB 2015. The October 2025 monthly security update will be the last update available for these versions. After this date, devices running these versions will no longer receive monthly security and preview updates containing protections from the latest security threats.When this will happenWindows 10, version 22H2 will reach end of servicing on October 14, 2025. Windows 10 2015 LTSB and Windows 10 IoT Enterprise LTSB 2015 will reach end of support on October 14, 2025.How this will affect your organizationThe October 2025 monthly security update will be the last update available for these versions. After this date, no further security updates, bug
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Your Windows release information toolbox
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Services
Windows
How informed and prepared are you for Windows updates and changes? Bookmark the tools we’re constantly updating and improving based on your feedback. This toolbox consolidates key links and support resources to streamline planning and deployment. When will this happen: The resources summarized in this article are already available and improved. How this will affect your organization: Be better informed and equipped to manage Windows updates and changes through the resources listed in this toolbox. Experience improved accessibility, discoverability, localization, and the overall user experience across our channels. What you need to do to prepare: No action is needed. Learn more about these existing resources under Additional information. Additional information: Bookmark Your Windows release information toolbox to access and learn more about: Windows release health Windows 11 release infor
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Windows Office Hours: July 17, 2025
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Services
Windows
If you are an IT admin with questions about managing and updating Windows, we want to help. Every third Thursday of the month, we host a live chat-based event on the Tech Community called Windows Office Hours. Members of the Windows, Microsoft Intune, Windows Autopilot, Windows Autopatch, and Windows 365 engineering teams will be standing by to answer your questions. We also have experts from FastTrack, the Customer Acceleration Team, and Microsoft public sector teams. Want to attend the July 17 session of Office Hours? Add it to your calendar and select Attend on the event page to let us know you’re coming. There is no video or live meeting component. Simply visit the event page, log in to the Tech Community, and leave your questions in the Comments section. You can also bookmark https://aka.ms/Windows/OfficeHours for upcoming dates (and the ability to add this event to your calendar).
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(Updated) Act now: Secure Boot certificates expire in June 2026
Major Change
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Services
Windows
Updated July 8, 2025: survey link changedIn the coming months, Microsoft will be rolling out updated Secure Boot certificates needed to ensure a secure startup environment of Windows. Current certificates will start expiring in June 2026 on all Windows systems released since 2012, except for 2025 Copilot+ PCs. This also affects third-party operating systems. Start by checking on the latest available firmware from original equipment manufacturers (OEMs) and enabling Windows diagnostic data. Visit the Secure Boot certificate rollout landing page for guidance for personal devices and IT-managed systems. When will this happen: In the coming months, the following updated certificates will be rolling out: Microsoft Corporation KEK 2K CA 2023, Microsoft Corporation UEFI CA 2023, Microsoft Option ROM UEFI CA 2023, Windows UEFI CA 2023 June 2026, the following certificates will expire: Microsoft
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Second phase for KB5057784: Protections for CVE-2025-26647 (Kerberos Authentication) begins today
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Services
Windows
Starting with the April 8, 2025, Windows security updates, protections for CVE-2025-26647 are being rolled out and enforced in phases. These updates change how certificate-based authentication (CBA) is handled when the issuing certificate authority (CA) is not in the NTAuth store but a Subject Key Identifier (SKI) mapping exists in the altSecID attribute.The second phase, Enforced by Default phase, begins today, July 8, 2025.When will this happen:July 8, 2025: Enforced by Default phaseUpdates released on or after July 8, 2025, will enforce the NTAuth store check by default. The AllowNtAuthPolicyBypass registry key setting will still allow customers to move back to Audit mode if needed. However, the ability to completely disable this security update will be removed.October 14, 2025: Enforcement modeUpdates released on or after October 14, 2025, will discontinue Microsoft support for the A