Overview
- KB5074105 advances Windows 11 25H2 to Build 26200.7705 and 24H2 to Build 26100.7705 as an optional monthly preview.
- Cross‑Device Resume now lets users continue activity from Android phones on PCs, including Spotify playback, Office documents, browser sessions, and Microsoft 365 Copilot content.
- Smart App Control can now be toggled in Settings without reinstalling Windows, restoring user control if it was previously locked by setup.
- The update addresses reliability problems including first‑login Explorer hangs, iSCSI boot errors with “Inaccessible Boot Device,” Boot Manager debug startup hangs, activation failures, GPU crashes, Windows Sandbox startup errors, and a UAC elevation freeze with Windows Terminal.
- Admins can install the preview via Windows Update or the Microsoft Update Catalog, with large ~4GB offline .msu packages that include bundled AI models, and Windows Server 2025 updates now use separate KB identifiers.