Microsoft Readies Security Feature-Update for Windows 11 Needing an OS Reinstall to Use

Microsoft is giving final touches to a what it refers to as a groundbreaking new security feature update for the Windows 11 operating system, which should significantly improve application-level security, and safeguard you from malicious apps based on the way they behave. Trouble is, to use the feature, you will have to reinstall your operating system (i.e. a clean reinstall), if you’re on the current release of Windows 11, or any build that’s older than the one that carries this update.

The Smart App Control feature by default blocks untrusted or uncertified applications from running on your PC, and unlike browser-level protections such as Smart Screen, is baked directly into the OS, and monitors application code at a process level, to detect potentially malicious application behavior. It does this using a combination of code-signing by the application publisher and an AI model for trust within the Microsoft cloud. The OS keeps in touch with the cloud 24×7 (whenever the PC is up), to receive the latest threat intelligence and AI model updates from the cloud. It’s very likely that Smart App Control will be part of the next significant version milestone of Windows 11 (such as “22H2”), which means everyone on 22H1 or older will be made to reinstall to use it.