Microsoft Releases Optional Windows 11 KB5079391 Update Adding Smart App Control Toggle and Display Enhancements
What Happened — Microsoft rolled out the optional preview cumulative update KB5079391 for Windows 11 24H2 and 25H2. The update introduces a toggle for Smart App Control (SAC) and a suite of display‑related reliability improvements.
Why It Matters for TPRM —
- SAC helps block untrusted applications, reducing the attack surface on third‑party endpoints.
- The update is optional; organizations must decide whether to adopt it across their vendor fleet.
- New display features may affect hardware compatibility assessments for SaaS‑enabled workstations.
Who Is Affected — Enterprises using Windows 11 24H2/25H2 on desktops, laptops, and ARM‑based devices; MSPs managing Windows endpoints.
Recommended Actions —
- Review the update’s relevance to your endpoint security baseline.
- Test the SAC toggle in a pilot group before enterprise‑wide deployment.
- Update asset inventories to reflect the new build numbers (26200.8116 / 26100.8116).
Technical Notes — The preview update does not contain security patches; it modifies the Smart App Control feature to be togglable without a clean OS reinstall and adds support for >1000 Hz refresh rates, USB‑4 monitors, and HDR reliability. No CVEs are associated. Source: BleepingComputer