Windows 10: Microsoft Windows Security Updates for April 2025 are now available

It is the second Tuesday of the month and that means Microsoft has released security updates for Windows and other company products like Office. Our overview gives regular users and system administrators an overview of what has been released.

It includes information about known issues, new features, links to downloads, an Excel spreadsheet with information about the updates and much more.

Microsoft Windows Security Updates: March 2025


You may download the following Excel spreadsheet to get a list of released updates. Click on the following link to download the archive to the local device: Windows security updates april 2025

Executive Summary

• Microsoft released a total of 126 security updates for various Microsoft products and 9 security update for non-Microsoft issues (e.g. Chromium).
• Windows clients with issues:
  • Windows 10 version 1809, 21H2, 22H2
  • Windows 11 version 22H2, 23H2, and 24H2
• Windows Server clients with issues:
  • Windows Server 2008
  • Windows Server 2019
  • Windows Server 2022

Product overview


Each supported version of Windows and their critical vulnerabilities are listed below.

• Windows 10 version 22H2: 60 vulnerabilities, 4 critical, 56 important
  • Windows Lightweight Directory Access Protocol (LDAP) Remote Code Execution Vulnerability -- CVE-2025-26663
  • Lightweight Directory Access Protocol (LDAP) Client Remote Code Execution Vulnerability --
    CVE-2025-26670
  • Windows TCP/IP Remote Code Execution Vulnerability -- CVE-2025-26686
  • Windows Hyper-V Remote Code Execution Vulnerability -- CVE-2025-27491
• Windows 11 version 22H2 and 23H2: 66 vulnerabilities, 2 critical, 64 important
  • Windows Lightweight Directory Access Protocol (LDAP) Remote Code Execution Vulnerability -- CVE-2025-26663
  • Lightweight Directory Access Protocol (LDAP) Client Remote Code Execution Vulnerability --
    CVE-2025-26670
  • Windows Hyper-V Remote Code Execution Vulnerability -- CVE-2025-27491
• Windows 11 version 24H2: 66 vulnerabilities, 3 critical, 30 important
  • Same as Windows 11, Version 22H3.

Windows Server products

• Windows Server 2008 R2 (extended support only): 39 vulnerabilities: 3 critical, 36 important
  • Windows Lightweight Directory Access Protocol (LDAP) Remote Code Execution Vulnerability -- CVE-2025-26663
  • Lightweight Directory Access Protocol (LDAP) Client Remote Code Execution Vulnerability --
    CVE-2025-26670
  • Windows TCP/IP Remote Code Execution Vulnerability -- CVE-2025-26686
• Windows Server 2016: 60 vulnerabilities: 6 critical, 54 important
  • Windows Lightweight Directory Access Protocol (LDAP) Remote Code Execution Vulnerability -- CVE-2025-26663
  • Lightweight Directory Access Protocol (LDAP) Client Remote Code Execution Vulnerability --
    CVE-2025-26670
  • Windows TCP/IP Remote Code Execution Vulnerability -- CVE-2025-26686
  • Windows Remote Desktop Services Remote Code Execution Vulnerability -- CVE-2025-27480
  • Windows Remote Desktop Services Remote Code Execution Vulnerability -- CVE-2025-27482
  • Windows Hyper-V Remote Code Execution Vulnerability -- CVE-2025-27491
• Windows Server 2019: 74 vulnerabilities: 6 critical, 68 important
  • Same as Windows Server 2016
• Windows Server 2022: 76 vulnerabilities: 5 critical, 29 important
  • Same as Windows Server 2016
• Windows Server 2025: 82 vulnerabilities: 6 critical, 76 important
  • Same as Windows Server 2016

Windows Security Updates


Windows 10 version 22H2

• Support Page: KB5055518

Updates and improvements:

• Security updates
• This update provides Noto CJK (Chinese, Japanese, and Korean) fonts in Windows.
• Improved support for web search providers in the EEA.

Windows 11 version 22H2 / 23H2

• Support Page: KB5055523

Updates and improvements:

• Security updates.
• Gamepad keyboard layout is now available for the touch keyboard.
• Chinese support in Voice access.
• Top cards in System > About.

Windows 11 version 24H2

• Support page: KB5055523

Updates and improvements:

• Security updates.
• [Copilot+ PCs] Improved Windows search using semantic indexing models with traditional lexical indexing.
• [Copilot+ PCs] Search for cloud-stored photos using natural language.
• [Copilot+ PCs] Improves Live captions and real-time translations on AMD and Intel systems. Snapdragon systems get support for additional languages for real-time translations.
• [Copilot+ PCs] Natural language commanding in voice access on Snapdragon systems. Also Chinese support.
• Gamepad keyboard layout is now available for the touch keyboard.
• Improved discoverability of emoji and more panels.
• Top Cards feature under System > About.
• Support for lock screen widgets in the EEA.

Windows Security updates

2025-04 Cumulative Security Update for Internet Explorer (KB5055515)

2025-04 Security Update for Microsoft server operating system version 21H2 for x64-based Systems (KB5057588)

2025-04 Cumulative Update for Microsoft server operating system version 21H2 for x64-based Systems (KB5055526)

2025-04 Security Update for Windows 10 Version 22H2 and Windows 10 Version 21H2 (KB5057589)

2025-04 Cumulative Update for Windows 10 Version 22H2 and Windows 10 Version 21H2 (KB5055518)

Windows Server:

2025-04 Security Monthly Quality Rollup for Windows Server 2008 R2 for x64-based Systems (KB5055561)

2025-04 Security Only Quality Update for Windows Server 2008 R2 for x64-based Systems (KB5055570)

2025-04 Security Only Quality Update for Windows Server 2008 (KB5055596)

2025-04 Security Monthly Quality Rollup for Windows Server 2008 (KB5055609)

2025-04 Security Monthly Quality Rollup for Windows Server 2012 R2 for x64-based Systems (KB5055557)

2025-04 Security Monthly Quality Rollup for Windows Server 2012 for x64-based Systems (KB5055581)

2025-04 Cumulative Update for Windows Server 2016 and Windows 10 Version 1607 (KB5055521)

2025-04 Cumulative Update for Windows Server 2019 and Windows 10 Version 1809 (KB5055519)

Servicing Stack Updates:

2025-04 Servicing Stack Update for Windows Server 2016 and Windows 10 Version 1607 (KB5055661)

2025-04 Servicing Stack Update for Windows Server 2012 R2 for x64-based Systems (KB5055665)

2025-04 Servicing Stack Update for Windows Server 2012 for x64-based Systems (KB5055667)

2025-04 Servicing Stack Update for Windows Server 2008 R2 for x64-based Systems (KB5056456)

2025-04 Servicing Stack Update for Windows Server 2008 (KB5056457)

Non-Security updates

2025-04 Security and Quality Rollup for .NET Framework 4.6.2 for Windows Server 2008 R2 and Windows Server 2008 (KB5054696)

2025-04 Security and Quality Rollup for .NET Framework 4.6.2, 4.7, 4.7.1, 4.7.2 for Windows Server 2012 for x64 (KB5054697)

2025-04 Security and Quality Rollup for .NET Framework 4.6.2, 4.7, 4.7.1, 4.7.2 for Windows Server 2012 R2 for x64 (KB5054698)

2025-04 Security and Quality Rollup for .NET Framework 4.8 for Windows Server 2008 R2 for x64 (KB5055171)

2025-04 Security and Quality Rollup for .NET Framework 4.8 for Windows Server 2012 for x64 (KB5055172)

2025-04 Security and Quality Rollup for .NET Framework 4.8 for Windows Server 2012 R2 for x64 (KB5055173)

2025-04 Security and Quality Rollup for .NET Framework 3.5.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8 for Windows Server 2008 R2 (KB5055684)

2025-04 Security and Quality Rollup for .NET Framework 3.5, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8 for Windows Server 2012 (KB5055685)

2025-04 Security and Quality Rollup for .NET Framework 3.5, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8 for Windows Server 2012 R2 (KB5055686)

2025-04 Security and Quality Rollup for .NET Framework 2.0, 3.0, 3.5 SP1, 4.6.2 for Windows Server 2008 (KB5055687)

2025-04 Cumulative Update for .NET Framework 3.5 and 4.8.1 for Microsoft server operating system, version 22H2 for x64 (KB5054693)

2025-04 Cumulative Update for .NET Framework 3.5 and 4.7.2 for Windows Server 2019 and Windows 10 Version 1809 (KB5054695)

2025-04 Cumulative Update for .NET Framework 3.5 and 4.8.1 for Microsoft server operating system, version 23H2 for x64 (KB5054705)

2025-04 Cumulative Update for .NET Framework 3.5 and 4.8 for Windows 10 Version 22H2 and Windows 10 Version 21H2 (KB5054977)

2025-04 Cumulative Update for .NET Framework 3.5 and 4.8.1 for Windows 10 Version 22H2 and Windows 10 Version 21H2 (KB5054978)

2025-04 Cumulative Update for .NET Framework 3.5 and 4.8.1 for Windows 11 version 23H2 & version 22H2 (KB5054980)

2025-04 Cumulative Update for .NET Framework 3.5 and 4.8 for Microsoft server operating system, version 22H2 for x64 (KB5055169)

2025-04 Cumulative Update for .NET Framework 4.8 for Windows Server 2016 and Windows 10 Version 1607 (KB5055170)

2025-04 Cumulative Update for .NET Framework 3.5 and 4.8 for Windows Server 2019 and Windows 10 Version 1809 (KB5055175)

2025-04 Dynamic Update for Windows 10 Version 21H2 (KB5055674)

2025-04 Cumulative Update for .NET Framework 3.5, 4.8 and 4.8.1 for Microsoft server operating system, version 22H2 for x64 (KB5055680)

2025-04 Cumulative Update for .NET Framework 3.5 and 4.7.2 for Windows Server 2019 and Windows 10 Version 1809 (KB5055681)

2025-04 Cumulative Update for .NET Framework 3.5 and 4.8 for Windows 10 Version 21H2 (KB5055682)

2025-04 Cumulative Update for .NET Framework 3.5 and 4.8 for Windows 10 Version 22H2 (KB5055683)

2025-04 Cumulative Update for .NET Framework 3.5, 4.8 and 4.8.1 for Microsoft server operating system version 21H2 for x64 (KB5055688)

2025-04 Dynamic Update for Microsoft server operating system, version 22H2 for x64-based Systems (KB5055765)

2025-04 Dynamic Update for Windows 10 Version 1607 (KB5055768)

2025-04 Dynamic Update for Windows 10 Version 1809 (KB5055769)

2025-04 Dynamic Update for Windows 10 Version 1507 (KB5055770)

2025-04 Dynamic Update for Microsoft server operating system, version 22H2 for x64-based Systems (KB5055771)

2025-04 Dynamic Update for Windows 10 Version 21H2 & Update for Windows 10 Version 22H2 (KB5056474)

Known Issues


Windows 10 version 22H2

• (OLD) Windows Event Viewer may display an error related to SgrmBroker.exe on devices with the January 14, 2025 update or later installed. It is logged as Event 7023 and the text should say "The System Guard Runtime Monitor Broker service terminated with the following error:".
  • Workaround: Microsoft says that this error has no impact on performance or functionality. The service has not been used "for a very long time" according to Microsoft.
• (OLD) Devices with Citrix components installed may not be able to install the January 2025 security updates.
  • Citrix has released a workaround that needs to be applied before installing the January 2025 security updates. Link here
• (Fixed) Issue with certain types of USB printers that printed automatically.
  • Workaround: Microsoft resolved the issue with a Known Issue Rollback. System administrators need to make Group Policy changes to apply this. Link here

Windows 11 version 22H2 and 23H2

• (OLD) Devices with Citrix components installed may not be able to install the January 2025 security updates.
  • Citrix has released a workaround that needs to be applied before installing the January 2025 security updates. Link here
• (Fixed) Issue with certain types of USB printers that printed automatically.
  • Workaround: Microsoft resolved the issue with a Known Issue Rollback. System administrators need to make Group Policy changes to apply this. Link here

Windows 11 version 24H2

• (NEW) Windows users who use Windows Hello to sign-in may experience the following. When they reset the PC and decided to keep the files and pick local install, they may be unable to login using Windows Hello facial recognition or their PIN.
  • Workaround: to log on using a PIN, users need to select Set my PIN on the logon screen to re-enroll. Face logon can only be enabled after the initial sign-in. Check Settings > Accounts > Sign-in options > Facial recognition (Windows Hello) > Set up for that.
• (OLD) Devices with Citrix components installed may not be able to install the January 2025 security updates.
  • Citrix has released a workaround that needs to be applied before installing the January 2025 security updates. Link here
• (OLD) Players on ARM devices may not be able to play Roblox via the Microsoft Store.
  • Workaround: download and play the title directly from the developer website.

Security advisories and updates

• ADV 990001 -- Latest Servicing Stack Updates

Microsoft Office Updates

You find Office update information here.

How to download and install the April 2025 security updates


All non-managed Windows systems install security updates by default automatically. This does not happen in real-time though, and it may make sense in some scenarios to install them early.

We do recommend that you create a backup of the opera ting system before the update process is started. You may use the free Paragon Backup & Recovery Free software for that or any other suitable backup software.

Once done, complete the following three steps to get started:

1. Open the Start menu, type Windows Update, and select the result.
2. Activate the "check for updates" button. This runs a manual check for updates.
3. Activate the "download & install all" button, if the update is not downloaded automatically.

Direct update downloads


Below are resource pages with direct download links, if you prefer to download the updates to install them manually.

Windows 10 version 22H2

• KB5055518 -- 2025-04 Cumulative Update for Windows 10 Version 22H2

Windows 11 version 22H2

• 
  KB5055523 -- 2025-04 Cumulative Update for Windows 11 version 22H2
  

Windows 11 version 23H2

• KB5055523 -- 2025-04 Cumulative Update for Windows 11 version 23H2

Windows 11 version 24H2

• KB5055523 -- 2025-04 Cumulative Update for Windows 11 version 24H2

Additional resources

• April 2025 Security Updates release notes
• List of software updates for Microsoft products
• List of the latest Windows Updates and Services Packs
• Security Updates Guide
• Microsoft Update Catalog site
• Our in-depth Windows update guide
• How to install optional updates on Windows 10
• Windows 11 24H2 Update History
• Windows 11 23H2 Update History
• Windows 10 Update History

Thank you for being a Ghacks reader. The post Microsoft Windows Security Updates for April 2025 are now available appeared first on gHacks Technology News.

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Microsoft April 2019 Security Updates

Release Notes
April 2019 Security Updates
Release Date: April 09, 2019

The April security release consists of security updates for the following software:

Adobe Flash Player
Internet Explorer
Microsoft Edge
Microsoft Windows
Microsoft Office and Microsoft Office Services and Web Apps
ChakraCore
ASP.NET
Microsoft Exchange Server
Team Foundation Server
Azure DevOps Server
Open Enclave SDK
Windows Admin Center
Please note the following information regarding the security updates:

A list of the latest servicing stack updates for each operating system can be found in ADV990001. This list will be updated whenever a new servicing stack update is released. It is important to install the latest servicing stack update.
Windows 10 updates are cumulative. The monthly security release includes all security fixes for vulnerabilities that affect Windows 10, in addition to non-security updates. The updates are available via the Microsoft Update Catalog.
Updates for Windows RT 8.1 and Microsoft Office RT software are only available via Windows Update.
For information on lifecycle and support dates for Windows 10 operating systems, please see Windows Lifecycle Facts Sheet.
In addition to security changes for the vulnerabilities, updates include defense-in-depth updates to help improve security-related features.
The following CVEs have FAQs with additional information and may include * further steps to take after installing the updates. Please note that this is not a complete list of CVEs for this release.

ADV190011
ADV990001
CVE-2019-0688
CVE-2019-0801
CVE-2019-0802
CVE-2019-0814
CVE-2019-0822
CVE-2019-0823
CVE-2019-0824
CVE-2019-0825
CVE-2019-0826
CVE-2019-0827
CVE-2019-0828
CVE-2019-0830
CVE-2019-0831
CVE-2019-0833
CVE-2019-0835
CVE-2019-0837
CVE-2019-0838
CVE-2019-0839
CVE-2019-0840
CVE-2019-0844
CVE-2019-0845
CVE-2019-0846
CVE-2019-0847
CVE-2019-0848
CVE-2019-0849
CVE-2019-0851
CVE-2019-0876
CVE-2019-0879
Known Issues
KB Article Applies To
4487563 Microsoft Exchange Server 2019, 2016, and 2013
4491413 Update Rollup 27 for Exchange Server 2010 Service Pack 3
4493441 Windows 10 version 1709, Windows Server Version 1709
4493446 Windows 8.1, Windows Server 2012 R2 (Monthly Rollup)
4493448 Windows 7 Service Pack 1, Windows Server 2008 R2 Service Pack 1 (Security-only update)
4493450 Windows Server 2012 (Security-only Rollup)
4493451 Windows Server 2012 (Monthly Rollup)
4493458 Windows Server 2008 Service Pack 2 (Security-only update)
4493464 Windows 10 version 1803, Windows Server Version 1803
4493467 Windows 8.1, Windows Server 2012 R2 (Security-only update)
4493470 Windows 10 version 1607, Windows Server 2016
4493471 Windows Server 2008 Service Pack 2 (Monthly Rollup)
4493472 Windows 7 Service Pack 1, Windows Server 2008 R2 Service Pack 1 (Monthly Rollup)
4493474 Windows 10 version 1703
4493509 Windows 10 version 1809, Windows Server 2019
4493730 Windows Server 2008 SP2
4493435 Internet Explorer Cumulative Update
https://portal.msrc.microsoft.com/en...b-000d3a33a34d

 

Microsoft blocks Windows 10 April Update for Intel SSD 600p Series

Microsoft is blocking some Intel SSDs from installing the April 2018 Update after discovering an incompatibility issue that causes performance and stability issues. In short, the problem was explained by Microsoft as: “When attempting to upgrade to Window 10 April 2018 Update select devices with certain Intel SSDs may enter a UEFI screen reboot or crash repeatedly.” Microsoft says that this issue has no workaround and that those that have attempted to update Windows 10 to the Windows 10 April 2018 Update should revert back to Windows 10 Fall Creators Update version 1709.

Unfortunately, the announcement by Microsoft fails to list what specific Intel SSD models are having issues with the OS update. We contacted Intel and discovered that the Intel SSD 600p Series of client drives that was first introduced to the market in 2016 is the most popular drive that is having issues.

Source: Legit Reviews

 

Four Microsoft Security Updates Coming Next Week

This month's Patch Tuesday (the last one for Windows XP and Office 2003) will see Microsoft roll out four fresh security updates, two rated Critical and two rated Important, targeting remote code execution vulnerabilities found in Windows, Office and Internet Explorer. One of the updates is set to resolve a Word bug that was made public last week (on March 24th) and is known to have been exploited in 'limited, targeted attacks directed at Microsoft Word 2010'.

The April patches will be made available next week on April 8th, at about 10:00 a.m. PDT. For a bit more info check out the Advance Notification published here.