The July 2026 Windows security update is now available

The July 2026 security update is now available for all supported versions of Windows. We recommend that you install these updates promptly. For more information about the contents of this update, see the release notes, which are accessible from the Windows 11 update history page. To learn more about the different types of monthly quality updates, see Understanding Windows monthly updates.    Highlights for the Windows 11, version 25H2 update: This security update includes improvements that were part of update KB5095093 (released June 23, 2026). This update addresses an issue that affects certain third-party apps that use OLE Automation to interact with Microsoft Office. This update changes hotkey unregister and cleanup behavior. This update introduces a security hardening change that enforces TDI transport registration requirements. This update upgrades the curl tool in Windows to version 8.21.0 and includes security improvements that help protect your device.   Note:The July 2026 security update for Windows 11, version 25H2 and Windows 11, version 24H2 (KB5101650) is not available for a limited number of Dell devices with Intel processors due to an incompatibility reported by Dell that can potentially cause unexpected shutdowns, poor performance, increased heat, and battery drain. We are working together with Dell to prevent the affected models from experiencing the issue and plan to release a resolution for affected devices in the coming days. Short on time? Watch the Windows 11 release notes video for this month’s tips.   For instructions on how to install this update, see the KB article for your operating system listed below: Windows 11, version 26H1: KB5101649 Windows 11, versions 25H2 and 24H2: KB5101650 Windows 11, version 23H2: KB5099414 Windows 11 Enterprise LTSC 2024: Baseline KB5101650 Windows 10, versions 22H2 and 21H2: KB5099539 Windows 10 Enterprise LTSC 2019 and Windows Server 2019: KB5099538 Windows 10 LTSB 2016 and Windows Server 2016: KB5099535 Windows Server 2025: KB5099536 Windows Server 2025 Datacenter: Azure Edition: Baseline KB5099536 Windows Server 2022: KB5099540 Windows Server 2022 Datacenter: Azure Edition: Baseline KB5099540 Windows Server 2012 R2: KB5099444 Windows Server 2012: KB5099445 Note: With recent and upcoming Windows updates over the next few months, a limited number of consumer and business devices might experience one additional restart during installation. This one‑time restart occurs after a Secure Boot certificate update is applied as part of the Secure Boot update process.