check before: 2025-04-09
Product:
SharePoint, Windows, Windows Server
Platform:
Online, Windows Desktop, World tenant
Status:
Change type:
Admin impact
Links:
Details:
Updated April 9, 2025: This message was updated to reflect the current availability of Windows 10 2015 LTSB.
The April 2025 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 and Windows 10 update history pages. To learn more about the different types of monthly quality updates, see Windows monthly updates explained.
Highlights for the Windows 11, version 24H2 update:
This security update includes improvements that were a part of update KB5053656 (released March 27, 2025).
This update makes quality improvements to the servicing stack, which is the component that installs Windows updates.
This update addresses an issue where machine passwords might not rotate correctly in the Identity Update Manager, which can result in user authentication issues.
This update adds support for the Aysen region in Chile Daylight Saving Time (DST) change in 2025. For more info about DST changes, see the Daylight Saving Time & Time Zone Blog.
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 24H2: KB5055523
Windows 11, versions 23H2 and 22H2: KB5055528
Windows 10, versions 22H2 and 21H2: KB5055518
Windows 10 Enterprise LTSC 2019 and Windows Server 2019: KB5055519
Windows 10 LTSB 2016 and Windows Server 2016: KB5055521
Windows 10 LTSB 2015: KB5055547
Windows Server 2025: KB5055523
Windows Server 2022: KB5055526
Windows Server 2012 R2: Monthly Rollup: KB5055557
Windows Server 2012: Monthly Rollup: KB5055581
Windows Server 2008 R2 Service Pack 1: Monthly Rollup: KB5055561 / Security Only: KB5055570
Windows Server 2008 SP2: Monthly Rollup: KB5055609 / Security Only: KB5055596
Change Category:
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Scope:
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Release Phase:
Created:
2025-04-09
updated:
2025-04-10
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 April 2025 Windows security update includes enhancements to the servicing stack, fixes for machine password issues, and adjustments for Daylight Saving Time changes in the Aysen region of Chile, with specific installation instructions available for different Windows versions.
Direct effects for Operations**
User Authentication Issues
Failure to rotate machine passwords can lead to user authentication problems, preventing users from accessing necessary resources.
- roles: IT Support, End Users
- references: https://support.microsoft.com/help/5053656
Service Disruption
Improper installation of the update may cause service disruptions, affecting applications that rely on Windows services.
- roles: System Administrators, Application Developers
- references: https://support.microsoft.com/help/5055518
Increased Support Tickets
Unexpected issues from the update may lead to a surge in support tickets, overwhelming IT support teams.
- roles: IT Support, Help Desk Staff
- references: https://support.microsoft.com/help/5055519
Compatibility Issues
New updates may introduce compatibility issues with existing software, leading to potential downtime for users.
- roles: Software Developers, End Users
- references: https://support.microsoft.com/help/5055521
User Experience Degradation
Users may experience degraded performance or bugs post-update, impacting their productivity and satisfaction.
- roles: End Users, IT Support
- references: https://support.microsoft.com/help/5055523
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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change history
| Date | Property | old | new |
| 2025-04-10 | MC prepare | https://aka.ms/Windows/MonthlyUpdates
https://aka.ms/Windows11/ReleaseNotes/Video/2504 https://support.microsoft.com/help/5053656 https://support.microsoft.com/help/5055518 https://support.microsoft.com/help/5055519 https://support.microsoft.com/help/5055521 https://support.microsoft.com/help/5055523 https://support.microsoft.com/help/5055526 https://support.microsoft.com/help/5055528 https://support.microsoft.com/help/5055557 https://support.microsoft.com/help/5055561 https://support.microsoft.com/help/5055570 https://support.microsoft.com/help/5055581 https://support.microsoft.com/help/5055596 https://support.microsoft.com/help/5055609 https://support.microsoft.com/topic/348facce-4988-4c6a-8cb9-50cab59fd385 https://techcommunity.microsoft.com/category/windows/blog/dstblog | https://aka.ms/Windows/MonthlyUpdates
https://aka.ms/Windows11/ReleaseNotes/Video/2504 https://support.microsoft.com/help/5053656 https://support.microsoft.com/help/5055518 https://support.microsoft.com/help/5055519 https://support.microsoft.com/help/5055521 https://support.microsoft.com/help/5055523 https://support.microsoft.com/help/5055526 https://support.microsoft.com/help/5055528 https://support.microsoft.com/help/5055547 https://support.microsoft.com/help/5055557 https://support.microsoft.com/help/5055561 https://support.microsoft.com/help/5055570 https://support.microsoft.com/help/5055581 https://support.microsoft.com/help/5055596 https://support.microsoft.com/help/5055609 https://support.microsoft.com/topic/348facce-4988-4c6a-8cb9-50cab59fd385 https://techcommunity.microsoft.com/category/windows/blog/dstblog |
| 2025-04-10 | MC Last Updated | 04/08/2025 19:01:52 | 2025-04-09T22:59:18Z |
| 2025-04-10 | MC Messages | The April 2025 security update is now available for all supported versions of Windows, except Windows 10 2015 LTSB. The April 2025 Windows security update for Windows 10 2015 LTSB will be available soon. 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 and Windows 10 update history pages. To learn more about the different types of monthly quality updates, see Windows monthly updates explained.
Highlights for the Windows 11, version 24H2 update: This security update includes improvements that were a part of update KB5053656 (released March 27, 2025). This update makes quality improvements to the servicing stack, which is the component that installs Windows updates. This update addresses an issue where machine passwords might not rotate correctly in the Identity Update Manager, which can result in user authentication issues. This update adds support for the Aysen region in Chile Daylight Saving Time (DST) change in 2025. For more info about DST changes, see the Daylight Saving Time & Time Zone Blog. 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 24H2: KB5055523 Windows 11, versions 23H2 and 22H2: KB5055528 Windows 10, versions 22H2 and 21H2: KB5055518 Windows 10 Enterprise LTSC 2019 and Windows Server 2019: KB5055519 Windows 10 LTSB 2016 and Windows Server 2016: KB5055521 Windows Server 2025: KB5055523 Windows Server 2022: KB5055526 Windows Server 2012 R2: Monthly Rollup: KB5055557 Windows Server 2012: Monthly Rollup: KB5055581 Windows Server 2008 R2 Service Pack 1: Monthly Rollup: KB5055561 / Security Only: KB5055570 Windows Server 2008 SP2: Monthly Rollup: KB5055609 / Security Only: KB5055596 | Updated April 9, 2025: This message was updated to reflect the current availability of Windows 10 2015 LTSB.
The April 2025 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 and Windows 10 update history pages. To learn more about the different types of monthly quality updates, see Windows monthly updates explained. Highlights for the Windows 11, version 24H2 update: This security update includes improvements that were a part of update KB5053656 (released March 27, 2025). This update makes quality improvements to the servicing stack, which is the component that installs Windows updates. This update addresses an issue where machine passwords might not rotate correctly in the Identity Update Manager, which can result in user authentication issues. This update adds support for the Aysen region in Chile Daylight Saving Time (DST) change in 2025. For more info about DST changes, see the Daylight Saving Time & Time Zone Blog. 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 24H2: KB5055523 Windows 11, versions 23H2 and 22H2: KB5055528 Windows 10, versions 22H2 and 21H2: KB5055518 Windows 10 Enterprise LTSC 2019 and Windows Server 2019: KB5055519 Windows 10 LTSB 2016 and Windows Server 2016: KB5055521 Windows 10 LTSB 2015: KB5055547 Windows Server 2025: KB5055523 Windows Server 2022: KB5055526 Windows Server 2012 R2: Monthly Rollup: KB5055557 Windows Server 2012: Monthly Rollup: KB5055581 Windows Server 2008 R2 Service Pack 1: Monthly Rollup: KB5055561 / Security Only: KB5055570 Windows Server 2008 SP2: Monthly Rollup: KB5055609 / Security Only: KB5055596 |
| 2025-04-10 | MC Start Time | 04/08/2025 19:01:51 | 2025-04-09T22:59:12Z |
| 2025-04-10 | MC Title | The April 2025 Windows security update is now available | (Updated) The April 2025 Windows security update is now available |
| 2025-04-10 | MC End Time | 04/08/2026 19:01:51 | 2026-04-09T22:59:12Z |
Last updated 1 week ago
