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Microsoft has released today the non-security preview update (also known as the C-release) for Windows 10. The update, under KB5062649 and Build 19045.6159, fixes some major bugs including one for Extended Security Updates (ESU), unresponsive systems, Secure Boot, and more. Since this is a preview update for next month's Patch Tuesday it is an optional release.
Microsoft says that users reported that the ESU wizard would not work correctly when they tried to use the option to extend support for Windows 10 for another year; this bug should be fixed now. The company has also fixed "stability issues" with this release as it resolves problems in the core file system. Affected users reported unresponsive systems since the May 2025 Patch Tuesday.
Windows 10 KB5062649 fixes Extended Security bug, unresponsive systems, and more
Microsoft has released new Windows 10 update under Build 19045.6159 and KB5062649. Although this is an optional release it has some important bug fixes.