- Windows 10 22H2 is getting build 19045.6456 (KB5066791) as the last cumulative ever with a small set of general improvements and fixes.
- There are no new major features in this release, as the operating system support ends today, October 14, 2025.
UPDATED 10/14/2025: Windows 10 build 19045.6456 (KB5066791) is now rolling out as part of the (last) October 2025 security update in the Stable Channel for version 22H2. This is a tiny update that addresses some general issues, but doesn’t include any noticeable changes or new features.
The end of support for Windows 10 is on October 14, 2025, which means that this is the last cumulative update that the operating system will receive publicly. To continue receiving critical security updates, you must enroll your computer in the Extended Security Updates (ESU) program.
The same security update is also available for version 21H2 as build 19044.6456 with the same changes as version 22H2.
According to the official notes, build 19045.6332 for Windows 10 introduces a small set of general improvements and fixes that improve the overall experience for customers.
The company is also pushing a couple of fixes, including:
- SMBv1 connectivity: Resolved a bug introduced in KB5065429 that blocked access to shared files and folders when using SMBv1 over NetBIOS (NetBT).
- Autopilot ESP loading issue: Fixed a problem where the Enrollment Status Page (ESP) failed to appear during Out-of-Box Experience (OOBE) when deploying Windows 10 22H2 through Autopilot.
- Input: Resolves problem with the Chinese Input Method Editor (IME). Private Unicode characters were shown incorrectly and did not meet the GB18030 standard.
- Windows Remote Management (WinRM): Fixed an issue that affects PowerShell Remoting and WinRM in which commands time out after 600 seconds.
- Fax modem driver: Uninstalls the
ltmdm64.sysdriver. As a result, fax modems that use this driver will no longer work in this operating system.
This final update introduces a servicing stack update (SSU), incorporating an updated certificate chain to improve Azure environment validation.
Microsoft does not reveal the final name of updates intended for the Stable Channel during the early development stages. While in preview, these are labeled as non-security updates. The official name, such as the October 2025 Security Update, is only assigned once the update is released on Patch Tuesday.
Older versions of Windows 10
Furthermore, Microsoft is releasing updates available for older operating system versions, including 1809, 1607, and 1507. For example, the company is rolling out the update KB5066586 for version 1809, bumping the build number to 17763.7919 with fixes.
Windows 10 1607 receives the update KB5066836, which bumps the version to build 14393.8519, and addresses issues with Windows Remote Management (WinRM) and the fax modem driver.
Finally, Windows 10 1507 is getting the update KB5063889, which bumps the build number to 10240.21100 and rolls out with miscellaneous security improvements to internal operating system functionality.
Windows 10 October 2025 Patch Tuesday – Manual installation process
To download and install this Windows 10 build, from the “Windows Update” settings by turning on the “Get the latest updates as soon as they’re available” option and clicking the “Check for Updates” button.
Windows 10 October 2025 Patch Tuesday – Update history
- Initial Release – Release Preview Channel:
- Windows 10 22H2 build 19045.6388 release date: September 11, 2025. Official notes.
- Windows 10 22H2 build 19045.6390 release date: September 16, 2025. (Same as .6388 notes.)
- Second Release – Optional Install (Stable Channel):
- Windows 10 22H2 build 19045.6456 release date: September 25, 2025. Official notes.
- Final Release – Patch Tuesday (Stable Channel):
- Windows 10 22H2 build 19045.6456 release date: October 14, 2025. Official notes.
Windows 10 end of support
Windows 10 has reached the end of its support. After this date, Microsoft will no longer provide security updates, bug fixes, features, or technical support for Windows 10. This lack of updates will leave your system vulnerable to security threats and may decrease its performance.
Since the software giant will no longer provide updates or support for Windows 10, you should upgrade to Windows 11 or another operating system, such as Linux Mint, or plan to purchase a new device.
According to the company, all versions of Windows 10 have already reached the end of support, including:
- Version 1507 (RTM)
- Windows 10 2015 LTSB
- Version 1511
- Version 1607
- Windows 10 2016 LTSB
- Version 1703
- Version 1709
- Version 1803
- Version 1809
- Windows 10 Enterprise LTSC 2019
- Version 1903
- Version 1909
- Version 2004
- Version 20H2
- Version 21H1
- Windows 10 IoT Enterprise LTSC 2021
- Version 22H2
If you want to continue using Windows 10, Microsoft now offers Extended Security Updates (ESU). This service was originally reserved for organizations needing to run older operating systems beyond the official support period, but it is now also offered to regular consumers.
Update October 14, 2025: This content has been updated with new information, and it’s been revised to ensure accuracy.
Mauro Huculak is a Windows How-To Expert and founder of Pureinfotech in 2010. With over 22 years as a technology writer and IT Specialist, Mauro specializes in Windows, software, and cross-platform systems such as Linux, Android, and macOS.
Certifications: Microsoft Certified Solutions Associate (MCSA), Cisco Certified Network Professional (CCNP), VMware Certified Professional (VCP), and CompTIA A+ and Network+.
Mauro is a recognized Microsoft MVP and has also been a long-time contributor to Windows Central.
You can follow him on YouTube, Threads, BlueSky, X (Twitter), LinkedIn and About.me. Email him at [email protected].