check before: 2026-02-01
Product:
Windows, Windows Server
Platform:
Online, Windows Desktop, World tenant
Status:
Change type:
Admin impact
Links:
Details:
The February 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 easily accessible from the Windows 11 update history page. To learn more about the different types of monthly quality updates, see Windows monthly updates explained.
Highlights for the Windows 11, version 25H2 update:
This security update includes improvements that were a part of update KB5074109 (released January 13, 2026), KB5077744 (released January 17, 2026), and KB5078127 (released January 24, 2026).
This update makes quality improvements to the servicing stack, which is the component that installs Windows updates.
This update addresses an issue that determines device eligibility for the full-screen gaming experience.
This update addresses an issue that prevented some devices from connecting to certain WPA3‑Personal Wi‑Fi networks.
Short on time? Watch our Windows 11 release notes video for this month's tips.
For instructions on how to install this update, see the KB for your operating system listed below:
Windows 11, version 26H1: KB5077179
Windows 11, versions 25H2 and 24H2: KB5077181
Windows 11, version 23H2: KB5075941
Windows 11 Enterprise LTSC 2024: Hotpatch KB5077212
Windows 10, versions 22H2 and 21H2: KB5075912
Windows 10 Enterprise LTSC 2019 and Windows Server 2019: KB5075904
Windows 10 LTSB 2016 and Windows Server 2016: KB5075999
Windows Server 2025: KB5075899
Windows Server 2025 Datacenter: Azure Edition: Hotpatch KB5075942
Windows Server 2022: KB5075906
Windows Server 2022 Datacenter: Azure Edition: Hotpatch KB5075943
Windows Server 2012 R2: KB5075970
Windows Server 2012: KB5075971
Note: Starting with the January 2026 security update, Windows Server 2025 has its own KB identifiers and build numbers, separate from Windows 11, versions 24H2 and 25H2. This change improves clarity for administrators. Installation and management processes remain the same.
Change Category:
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Scope:
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Release Phase:
Created:
2026-02-11
updated:
2026-02-11
Task Type
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Docu to Check
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MS Preperations
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MS Urgency
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MS workload name
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summary for non-techies**
The February 2026 Windows security update improves the servicing stack for more efficient future updates, addresses full-screen gaming and Wi-Fi connectivity issues, and introduces unique identifiers for Windows Server 2025 updates, with specific installation instructions available for each Windows version.
Direct effects for Operations**
System Downtime
If the update is applied without proper preparation, it may lead to unexpected system downtime, affecting user productivity.
- roles: IT Administrator, End User
- references: https://support.microsoft.com/help/5074109, https://support.microsoft.com/help/5075904
Compatibility Issues
The update may introduce compatibility issues with existing applications, leading to disruptions in user workflows.
- roles: Application Support Specialist, End User
- references: https://support.microsoft.com/help/5075906, https://support.microsoft.com/help/5075912
Network Connectivity Problems
The update addresses Wi-Fi connectivity issues; however, if not properly managed, it may cause further network problems for users.
- roles: Network Administrator, End User
- references: https://support.microsoft.com/help/5077744, https://support.microsoft.com/help/5078127
User Experience Degradation
Changes in the full-screen gaming experience may negatively impact users who rely on this feature for work or leisure.
- roles: Game Developer, End User
- references: https://support.microsoft.com/help/5074109, https://support.microsoft.com/help/5077181
Increased Support Tickets
Unprepared updates can lead to a surge in support tickets from users facing issues, straining IT resources.
- roles: Help Desk Technician, IT Manager
- references: https://support.microsoft.com/help/5075899, https://support.microsoft.com/help/5075970
Configutation Options**
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Opportunities**
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Potentional Risks**
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IT Security**
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explanation for non-techies**
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** AI generated content. This information must be reviewed before use.
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