KB5074170


Microsoft has released cumulative update KB5074170 for Windows 11, version 25H2 for insiders on the Dev channel – Windows 11 Insider Preview Quality Update (26300.7674). This update includes a number of fixes and improvements aimed at increasing system stability and ease of use, and also eliminates several critical bugs that users encountered in previous builds.

Known issues:

Installation via Windows Update: go to Settings > Windows Update and click Check for updates. A computer restart is required to complete the installation.

Please note! Update KB5074170 is delivered in the form of checkpoint updates. These cumulative updates will be smaller in size and contain only changes since the last checkpoint, which will speed up the download and installation process, saving bandwidth and disk space. Therefore, before installing it manually, you must install previous updates – KB5043080 (Build 26100.1742) for Windows 11, version 24H2.


Official announcement on the Microsoft website.

The last 10 Windows updates:

Update Build Version Windows Channel Date
KB5083778 28020.1873 26H1 Windows 11 Experimental 2026-04-24
KB5083780 26300.8289 25H2 Windows 11 Experimental 2026-04-24
KB5083781 26220.8283 25H2 Windows 11 Beta 2026-04-24
KB5083631 26200.8313 25H2/24H2 Windows 11 Preview 2026-04-17
KB5083725 28020.1863 26H1 Windows 11 Canary 2026-04-17
KB5083726 26300.8276 25H2 Windows 11 Dev 2026-04-17
KB5083728 26220.8271 25H2 Windows 11 Beta 2026-04-17
KB5082052 22631.6936 23H2 Windows 11 Stable 2026-04-14
KB5083768 28000.1836 26H1 Windows 11 Stable 2026-04-14
KB5082200 19045.7184 22H2 (ESU) Windows 10 Stable 2026-04-14