The clock is officially ticking for Windows 10, with mainstream support set to end next month. Microsoft has confirmed that October 14th, 2025 will mark the final day the operating system receives standard updates, and in preparation, the company has released what appears to be its last cumulative update to include bug fixes. Known as update KB5066198, the preview version is now available for anyone who wants to install it ahead of its full rollout.
The update brings Windows 10 to Build 19045.6396, but users shouldn’t expect any new features—Microsoft made it clear long ago that no fresh functionality would be coming to the OS this late in its lifecycle. Instead, KB5066198 addresses two specific bugs. The first resolves a long-standing issue with SMBv1 protocol connectivity, which previously caused problems when connecting to shared files or folders after update KB5065429 was applied. The second fix tackles a glitch in Windows Autopilot’s Enrollment Status Page (ESP), which could fail to load during the Out-of-Box Experience when setting up devices on version 22H2.
These fixes may only affect a relatively small group of users, but they highlight Microsoft’s commitment to ironing out lingering issues before closing the book on Windows 10. Users can grab the update now via Windows Update or manually from the Microsoft Update Catalog.
Looking forward, October’s official patch will likely be the final cumulative update to deliver such bug resolutions. Beyond that, Microsoft will only push security-related patches, and only for organizations or individuals enrolled in the paid Extended Security Updates (ESU) program. Those who don’t opt into ESU will be left without updates, leaving their systems increasingly vulnerable to exploits and malware. With the end of support looming, this is the clearest sign yet that Windows 10’s long reign is about to conclude, making it a pivotal time for users still holding out to finally consider a move to Windows 11—or prepare to pay for extended coverage.
