Windows 11 KB5074109 lands for 25H2/24H2 with fixes, Copilot share, and AI-tied size
Microsoft released Windows 11 KB5074109 for 25H2 and 24H2 via Windows Update or direct offline installers (.msu). The update, bringing builds 26200.7623 (25H2) or 26100.7623 (24H2), is a primarily fix-focused Patch Tuesday that also rolls out several new features (e.g., Share with Copilot on the taskbar, a File Explorer ‘Recommended’ feed, advanced Settings for Sandbox/Hyper‑V, dark-mode dialogs, and handheld full-screen gaming) and security updates. It’s over 4 GB in size due to bundled AI models, and some modern drivers are removed. Enterprise users may see new Secure Boot certificates starting with this release. A known issue from earlier updates—the lock screen password icon—still exists; updates for 25H2 are mandatory unless paused.