UPDATE 10/28:
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Important: Secure Boot certificates used by most Windows devices are set to expire starting in June 2026. This might affect the ability of certain personal and business devices to boot securely if not updated in time. To avoid disruption, we recommend reviewing the guidance and taking action to update certificates in advance. For details and preparation steps, see Windows Secure Boot certificate expiration and CA updates.
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To learn about Windows update terminology, see types of Windows updates and monthly quality update types. For an overview, see the update history page for Windows 11, version24H2 and version 25H2.
Stay informed! Follow @WindowsUpdate for the latest updates from the Windows Release Health Dashboard.
Symptoms
Some Digital TV and Blu-ray/DVD apps might not play protected content as expected after installing the August 29, 2025, Windows non-security preview update (KB5064081), or later updates.
Apps that use Enhanced Video Renderer with HDCP enforcement or Digital Rights Management (DRM) for digital audio might show copyright protection errors, frequent playback interruptions, unexpected stops, or black screens.
Streaming services are not affected.
Workaround
The non-security September 2025 Windows preview update (KB5065789) and later updates address problems affecting certain applications that use the Enhanced Video Renderer (EVR) with HDCP (High-bandwidth Digital Content Protection) enforcement. The non-security October Windows preview update (KB5067036) includes additional improvements to address problems affecting applications using Digital Rights Media (DRM) for digital audio.
Symptoms
After installing the non-security September update (KB5065789) for Windows 11, version 25H2, or the security October update (KB5066835) for Windows 11, version 24H2, server-side applications that rely on HTTP.sys might experience issues with incoming connections. As a result, Internet Information Services (IIS) websites might fail to load and display an error message such as “Connection reset – error (ERR_CONNECTION_RESET)” or a similar message. This includes websites hosted on http://localhost/ and other IIS connections.
This issue may result from various conditions, including internet connectivity, timing of update installation, and device restarts. It might not occur in all environments, even if the update is installed.
The following steps can help resolve this issue in environments where it's observed:
Workaround
This issue is addressed in KB5067036.
Microsoft combines the latest servicing stack update (SSU) for your operating system with the latest cumulative update (LCU). For general information about SSUs, see Servicing stack updates and Servicing Stack Updates (SSU): Frequently Asked Questions.
Install this update
To install this update, use one of the following Windows and Microsoft release channels.
1 This latest cumulative update includes updates for AI components. Even though the AI component updates are included in the update, the AI components are only applicable to Windows Copilot+ PCs and will not install on Windows PC or Windows Server.
If you want to remove the LCU
To remove the LCU after installing the combined SSU and LCU package, use the DISM/Remove-Package command line option with the LCU package name as the argument. You can find the package name by using this command: DISM /online /get-packages.
Running Windows Update Standalone Installer (wusa.exe) with the /uninstall switch on the combined package will not work because the combined package contains the SSU. You cannot remove the SSU from the system after installation.
File information
For a list of the files provided in this update, download the file information for cumulative update 5070773.
For a list of the files provided in the servicing stack update, download the file information for the SSU KB5067360 - version 26100.6893.
support.microsoft.com
Check Windows Updates
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KB5067036 Windows 11 Cumulative Update Preview build 26100.7019 (24H2) and 26200.7019 (25H2) - Oct. 28
UPDATE 11/11: https://www.elevenforum.com/t/kb5068861-windows-11-cumulative-update-build-26100-7171-24h2-and-26200-7171-25h2-nov-11.41909/ Microsoft Support: This non-security update for Windows 11, version 24H2 (KB5067036), improves functionality, performance, and reliability. To learn more...
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Microsoft Support:
October 20, 2025 - KB5070773 (OS Builds 26200.6901 and 26100.6901) Out-of-band
Windows Secure Boot certificate expirationImportant: Secure Boot certificates used by most Windows devices are set to expire starting in June 2026. This might affect the ability of certain personal and business devices to boot securely if not updated in time. To avoid disruption, we recommend reviewing the guidance and taking action to update certificates in advance. For details and preparation steps, see Windows Secure Boot certificate expiration and CA updates.
Updating Microsoft Secure Boot keys before expiration in June 2026
UPDATE 4/02: https://support.microsoft.com/en-us/topic/secure-boot-certificate-update-status-in-the-windows-security-app-5ce39986-7dd2-4852-8c21-ef30dd04f046 UPDATE 2/10: https://www.elevenforum.com/t/refreshing-the-root-of-trust-industry-collaboration-on-secure-boot-certificate-updates.44460/...
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To learn about Windows update terminology, see types of Windows updates and monthly quality update types. For an overview, see the update history page for Windows 11, version24H2 and version 25H2.
Stay informed! Follow @WindowsUpdate for the latest updates from the Windows Release Health Dashboard.
Improvements
This out-of-band (OOB) update includes quality improvements. This update is cumulative and includes security fixes and improvements from the October 14, 2025, security update (KB5066835), in addition to the following:- [USB] Fixed: After installing the Windows security update released on October 14, 2025 (KB5066835), USB devices, such as keyboards and mice, do not function in the Windows Recovery Environment (WinRE). This issue prevents navigation of any of the recovery options within WinRE. Note that the USB devices continue to work normally within the Windows operating system.
AI Components
This release updates the following AI components:| AI Component | Version |
|---|---|
| Image Search | 1.2509.1022.0 |
| Content Extraction | 1.2509.1022.0 |
| Semantic Analysis | 1.2509.1022.0 |
| Settings Model | 1.2509.1022.0 |
Windows 11 servicing stack update (KB5067360)- 26100.6893
This update makes quality improvements to the servicing stack, which is the component that installs Windows updates. Servicing stack updates (SSU) ensure that you have a robust and reliable servicing stack so that your devices can receive and install Microsoft updates. To learn more about SSUs, see Simplifying on-premises deployment of servicing stack updates.Known issues in this update
1 Problems playing protected content in some BluRay/DVD/Digital TV apps
Symptoms
Some Digital TV and Blu-ray/DVD apps might not play protected content as expected after installing the August 29, 2025, Windows non-security preview update (KB5064081), or later updates.
Apps that use Enhanced Video Renderer with HDCP enforcement or Digital Rights Management (DRM) for digital audio might show copyright protection errors, frequent playback interruptions, unexpected stops, or black screens.
Streaming services are not affected.
Workaround
The non-security September 2025 Windows preview update (KB5065789) and later updates address problems affecting certain applications that use the Enhanced Video Renderer (EVR) with HDCP (High-bandwidth Digital Content Protection) enforcement. The non-security October Windows preview update (KB5067036) includes additional improvements to address problems affecting applications using Digital Rights Media (DRM) for digital audio.
2 IIS websites might fail to load
Symptoms
After installing the non-security September update (KB5065789) for Windows 11, version 25H2, or the security October update (KB5066835) for Windows 11, version 24H2, server-side applications that rely on HTTP.sys might experience issues with incoming connections. As a result, Internet Information Services (IIS) websites might fail to load and display an error message such as “Connection reset – error (ERR_CONNECTION_RESET)” or a similar message. This includes websites hosted on http://localhost/ and other IIS connections.
This issue may result from various conditions, including internet connectivity, timing of update installation, and device restarts. It might not occur in all environments, even if the update is installed.
The following steps can help resolve this issue in environments where it's observed:
- On the affected device, open Settings and go to Windows Update.
- Select Start , type Check for updates, and Check for updates from the results.
- If updates are available, install them.
- Restart your device.
Workaround
This issue is addressed in KB5067036.
How to get this update
Before you install this updateMicrosoft combines the latest servicing stack update (SSU) for your operating system with the latest cumulative update (LCU). For general information about SSUs, see Servicing stack updates and Servicing Stack Updates (SSU): Frequently Asked Questions.
Install this update
To install this update, use one of the following Windows and Microsoft release channels.
| Available | Next Step |
|---|---|
| This update downloads and installs automatically from Windows Update and Microsoft Update. |
| Yes 1 | Before you install this update To get the standalone package(s) for this update, go to the Microsoft Update Catalog website. This KB contains one or more MSU files that require installation in a specific order. Install this update Method 1: Install all MSU files together Download all MSU files for KB5070773 from Microsoft Update Catalog and place them in the same folder (for example, C:/Packages). Use Deployment Image Servicing and Management (DISM.exe) to install the target update. DISM will use the folder specified in PackagePath to discover and install one or more prerequisite MSU files as needed. Updating Windows PC To apply this update to a running Windows PC, run the following command from an elevated Command Prompt: DISM /Online /Add-Package /PackagePath:c:\packages\Windows11.0-KB5070773-x64.msuOr, run the following command from an elevated Windows PowerShell prompt: Add-WindowsPackage -Online -PackagePath "c:\packages\Windows11.0-KB5070773-x64.msu"Updating Windows Installation media To apply this update to Windows Installation media, see Update Windows installation media with Dynamic Update. Note: When downloading other Dynamic Update packages, ensure they match the same month as this KB. If the SafeOS Dynamic Update or Setup Dynamic Update is not available for the same month as this KB, use the most recently published version of each. To add this update to a mounted image, run the following command from an elevated Command Prompt: DISM /Image:mountdir /Add-Package /PackagePath:Windows11.0-KB5070773-x64.msuOr, run the following command from an elevated Windows PowerShell prompt: Add-WindowsPackage -Path "c:\offline" -PackagePath "Windows11.0-KB5070773-x64.msu" -PreventPendingMethod 2: Install each MSU file individually in order Download and install each MSU file individually using DISM or Windows Update Standalone Installer in the following order:
|
If you want to remove the LCU
To remove the LCU after installing the combined SSU and LCU package, use the DISM/Remove-Package command line option with the LCU package name as the argument. You can find the package name by using this command: DISM /online /get-packages.
Running Windows Update Standalone Installer (wusa.exe) with the /uninstall switch on the combined package will not work because the combined package contains the SSU. You cannot remove the SSU from the system after installation.
File information
For a list of the files provided in this update, download the file information for cumulative update 5070773.
For a list of the files provided in the servicing stack update, download the file information for the SSU KB5067360 - version 26100.6893.
Source:
October 20, 2025—KB5070773 (OS Builds 26200.6901 and 26100.6901) Out-of-band | Microsoft Support
October 20, 2025—KB5070773 (OS Builds 26200.6901 and 26100.6901) Out-of-band
support.microsoft.com
Check Windows Updates
UUP Dump:
64-bit ISO download:
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Select language for Windows 11, version 24H2 (26100.6901) amd64 on UUP dump. UUP dump lets you download Unified Update Platform files, like Windows Insider updates, directly from Windows Update.
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Select language for Windows 11, version 25H2 (26200.6901) amd64
Select language for Windows 11, version 25H2 (26200.6901) amd64 on UUP dump. UUP dump lets you download Unified Update Platform files, like Windows Insider updates, directly from Windows Update.
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ARM64 ISO download:
Select language for Windows 11, version 24H2 (26100.6901) arm64
Select language for Windows 11, version 24H2 (26100.6901) arm64 on UUP dump. UUP dump lets you download Unified Update Platform files, like Windows Insider updates, directly from Windows Update.
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Select language for Windows 11, version 25H2 (26200.6901) arm64
Select language for Windows 11, version 25H2 (26200.6901) arm64 on UUP dump. UUP dump lets you download Unified Update Platform files, like Windows Insider updates, directly from Windows Update.
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UUP Dump - Download Windows Insider ISO
UUP Dump is the most practical and easy way to get ISO images of any Insider Windows 10 or Windows 11 version, as soon as Microsoft has released a new build. UUP Dump creates a download configuration file according to your choices, downloads necessary files directly from Microsoft servers, and...
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