

All Windows 10 and 11 systems have patches for critical vulnerabilities.The Microsoft Windows Security Updates: October 2021Ĭlick here to download a spreadsheet that includes all released security updates by Microsoft on today's Patch Day: Security Updates -microsoft-windows Then you find the operating system distribution, information about all updates for client versions of Windows, including known issues confirmed by Microsoft, lists of other security and non security updates, and download information.

The overview begins with an executive summary that summarizes the most important information. Most Windows updates are cumulative, and the most recent updates for Windows includes the patches of the optional updates that Microsoft released after the October 2021 Patch Day.

Microsoft released updates for all supported client and server versions of Windows, including Windows 11, and for other company products such as Microsoft Office. This guide offers an overview of the security updates and non-security updates that Microsoft released for its products on the November 2021 Patch Day.
