Microsoft is now deploying the KB5079391 update, an elective release that brings several minor yet practical enhancements to the Windows 11 platform.
One notable addition enables users to enable or disable Smart App Control (SAC) without needing to perform a full operating system reinstallation—a capability that users have eagerly awaited for some time.
SAC serves as a protective measure designed to block harmful applications from executing on a computer. While it generally functions effectively, it occasionally misidentifies legitimate software as threats, blocking their use unless explicitly permitted.
Note: Windows 11 Home edition lacks access to numerous advantages available in Windows 11 Pro. For details, review our overview comparing Windows 11 Home and Pro versions. Interested in upgrading? It's available at a discount in the PCWorld Software Store for $59, down from $99.
The update now supports monitors with refresh rates reaching 1,000Hz, helping prepare the system for advanced displays aimed at gaming enthusiasts. The inaugural device surpassing this threshold was unveiled at CES 2026 earlier this year.
Furthermore, energy usage drops when connecting through USB4 ports, and high dynamic range (HDR) performance gains improved stability.
According to Windows Latest, the rollout includes refinements to File Explorer along with fresh configuration options for Microsoft 365. These encompass better voice typing capabilities and the ability to organize access rights through the 'Advanced Security Settings' dialog in File Explorer.
To apply KB5079391, the simplest method is to launch Windows Update, search for available updates, and proceed with the setup prompts. You can also download it straight from the Microsoft Update Catalog.
At present, the patch shows no reported issues, though Windows 11 updates have a history of emerging complications.
This piece was initially published in our affiliated outlet PC för Alla and adapted from its Swedish original.