Windows 10 has changed quite a lot since its original release in July 2015. The November Update and Anniversary Update both introduced new features and major changes, making it a much better and more rounded OS.
But the problem with having different versions of what is essentially the same operating system is that supporting multiple branches isn’t feasible.
Microsoft has said previously that it will only update two Current Branch for Business versions of Windows 10 at a time, and come March 26 it will stop updating the original release, known as 1507.
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United States
USA — software Microsoft to stop updating the original Windows 10 release after March 26