Windows 11 Moment 4 Update Overview Windows 11 Moment 4 Update (cumulative update KB5030310, OS Build 22621.2361). Microsoft has released the next major feature update for Windows 11. It was developed under the project name “Moment 4” and introduces a number of exciting innovations and improvements. Various bug fixes, many improvements, and some new features for your Windows 11. VirusTotal: Setup: