New Windows Defender feature blocks and blacklists unauthorized apps from making changes to files. Controlled folder Access is part of Windows 10 Insider Preview Build 16232, released yesterday evening. Microsoft says it will ship to all Windows users in October-November, when Microsoft plans to release it for all users as part of the operating system’s major update package, codenamed Redstone 3, or the Fall Creators Update. Microsoft boasts that this new feature will block ransomware from encrypting files. The company says most apps are considered “friendly”” and are already whitelisted.”
Source: https://www.bleepingcomputer.com/news/microsoft/microsoft-announces-controlled-folder-access-to-fend-off-crypto-ransomware/