Support for Windows 10 has ended on October 14, 2025
After October 14, 2025, Microsoft will no longer provide free software updates from Windows Update, technical assistance, or security fixes for Windows 10. Your PC will still work, but we recommend moving to Windows 11.
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Change date |
Change description |
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October 22, 2025 |
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October 10, 2025 |
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Summary
This article lists the security fixes and quality improvements included in this security update.
Applies to: Windows 10 IoT Enterprise 2016 LTSB
This security update includes fixes and quality improvements that are part of the following update:
The following is a summary of the issues that this update addresses. The bold text within the brackets indicates the item or area of the change we are documenting.
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[Windows Remote Management (WinRM)] Fixed: An issue that affects PowerShell Remoting and WinRM in which commands time out after 600 seconds.
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[Fax modem driver] This update removes the ltmdm64.sys driver. Fax modem hardware dependent on this specific driver will no longer work in Windows.
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[Cryptography] This update enforces a security hardening improvement by requiring use of Key Storage Provider (KSP) instead of Cryptographic Service Provider {CSP) for RSA-based smart card certificates. If you experience problems with smart card authentication as a result of this design change, see the Windows Release Health site for resolution steps. For additional details, see CVE-2024-30098.
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[File Explorer] After installing this update, File Explorer automatically disables the preview feature for files downloaded from the internet. This change is designed to enhance security by preventing a vulnerability when users preview potentially unsafe files. For details, including steps to unblock files, see File Explorer automatically disables the preview feature for files downloaded from the internet.
If you installed earlier updates, only the new updates contained in this package will be downloaded and installed on your device.
For more information about security vulnerabilities, please refer to the new Security Update Guide website and the October 2025 Security Updates.
For more information about Windows 10, version 1607, see its update history page.
For information about Windows update terminology, see the article about the types of Windows updates and the monthly quality update types.
Known issues in this update
Microsoft is not currently aware of any issues with this update.
How to get this update
Before you install this update
To install any Windows 10, version 1607 cumulative update released on or after January 14, 2025, we recommend you first install the latest Servicing Stack Update (SSU). If your device or offline image does not have the latest SSU installed, you might not be able to install this update.
Caution Until you install the SSU, this update might not be offered to your device. To reduce your security risk, install the SSU as soon as possible.
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If you use Windows Update, the latest SSU (KB5066584) will be offered to you automatically. If the latest SSU is not installed, you might not be able to install this update.
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If you use Windows Update for Business, the latest SSU (KB5066584) will be offered to you automatically. If the latest SSU is not installed, you might not be able to install this update.
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If you use the Update Catalog, we recommend you download and install the latest SSU (KB5066584). If the latest SSU is not installed, you might not be able to install this update.
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If you are a Windows Server Update Services (WSUS) administrator, you must approve SSU KB5066584 and this update KB5066836.
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.
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Available |
Next Step |
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This update will be downloaded and installed automatically from Windows Update and Microsoft Update. |
File information
A list of the files that are included in this update are provided in a CSV (Comma delimited) (*.csv) file. The file can be opened in a text editor such as Notepad or in Microsoft Excel.