You might have to check for updates or restart your PC (going by the comments in the original Redditthread) but it worked for us without doing anything but typing the string in the Command Prompt. You can confirm the latest Windows 10 being downloaded in the Windows Update.

Windows 10 should start downloading in a few minutes.

To receive your copy of Windows 10 instantly: However, this folder too isn't a guarantee of a user being able to actually install Windows 10. This folder titled $Windows.~BT is apparently the download folder carrying the installation files. We already shared with you that some users started to spot a new folder in their Windows partition. Microsoft had promised that Insiders would be first in line and while we believed in their luck, ours is no worse! If you are wondering how you can taste the tantalizing Windows 10 on the very first day of its launch, here's what to do. However, it seems like you can get the update in the very first wave even if you aren't an Insider. Yes, we told you that Microsoft is not going to send the Windows 10 update to everyone immediately and in fact, the rollout strategy seeds out the updates in multiple waves. Roll-out strategy? What roll-out strategy! If you still haven't received the very latest and distinctly beautiful Windows 10 installation notification, not a thing to worry about as we know how you can get it right now! Download and install Windows 10! Update : Latest Windows 10 version 21H2 is out!

Download and install windows 10