Yesterday Microsoft released Windows 10 Build 19043.867 21H1 on the beta channel.

You might be curious what it’s like to do a fresh installation of Windows 10 21H1 instead of tinkering with various updates to get your new 21H1 build installed on your PC.

There is a way to get ahead of the curve by making your own ISO using one-click ISO Builder from This way you can install a clean Windows 10 19043.867 21H1 on your machine.

Microsoft: 21H1 is now being offered as a recommended update to all Windows Insiders in the Beta Channel. Insiders who previously didn’t choose to install 21H1 will now automatically receive 21H1 in the Beta Channel.