Microsoft starts rolling out Windows 10 May 2021 update Microsoft announced the next Window 10 feature update called version 21H1 back in February. Today it has started rolling it out as May 2021 update for the users that brings with it security, remote access and quality improvements, along with updates to a few core user experiences. New features in Windows 10 May 2021 update Use an external camera as the default for Windows Hello – For those using a Windows-Hello-compatible external camera with a PC that already has a built-in camera, Windows automatically uses that external camera as the default for Windows Hello. Open documents faster yet securely – Improvements to Windows Defender Application Guard lets you open your documents open faster, while still checking for possible security concerns. Windows Defender Application Guard helps prevent untrusted Word, PowerPoint, and Excel files from accessing your company’s trusted resources.