The first Windows security updates of 2024 are here

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Welcome to the Microsoft Windows January 2024 security updates overview. It is the first Patch Day of the year for Microsoft. The company has addressed a total of 48 unique vulnerabilities in Microsoft products and 5 unique vulnerabilities in non-Microsoft products.

Our overview provides system administrators and home users with actionable information about the released security updates. It includes an Excel spreadsheet with a list of updates, information about affected products, known issues, and lists of other security updates that Microsoft released for its products.

You also find resource links, including download links, and instructions to download and install the patches on Windows devices.

Check out the December 2023 Security update overview here.

Note: if you are getting error 0x80070643 when installing the update.

Microsoft Windows Security Updates: January 2024

Here is a link to an Excel spreadsheet that lists information about the released security updates on the January 2024 Microsoft Patch Day. Follow this link to download an archive file that contains the spreadsheet:  Windows security updates January 2024

Executive Summary

• All Windows client and server versions are affected by at least 1 critical issue, most are affected by 2 critical issues.
  
• Windows clients with issues are: Windows 10 version 1809, Windows 10 version 21H2 and 22H2, Windows 11 version 21H2, 22H2 and 23H2
  
• Windows Server clients: Windows Server 2008 and 2008 R2, Windows Server 2019
  

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