Microsoft has hidden a new downgrade policy within the Windows 10 Anniversary Update: Once you’ve installed it, you’ll only have 10 days to downgrade to an earlier version or build, rather than the 31 days provided before.
Historically, Microsoft had given users a full month to roll back any updates, including upgrades to Windows 10. Supersite for Windows reported this week, however, that it was unable to downgrade to an earlier build after a 10-day limit had expired, though it wasn’t exactly clear what builds the limit applied to.
Applying the Anniversary Update triggers the new policy. According to Microsoft, it doesn’t matter whether you’ve upgraded to Windows 10 from Windows 8 or Windows 7, or whether you simply updated your PC from an earlier version of Windows 10. Once you’ve installed the Anniversary Update, you have 10 days to back out, not 31, before the AU becomes “permanent.”
“T]his new 10-day behavior is for all upgrades and updates to the Anniversary Update,” the representative said in an email.Why this matters: Just when you thought Microsoft’s aggressive upgrade practices were over—remember all the nastiness about deceptive upgrade tactics?—it appears Microsoft is stealthily closing the Windows 10 escape hatch. Recent Windows 10 converts need to figure out when they upgraded to Windows 10, and whether they want to keep it, pronto. And if you upgraded to Windows 10 just so you could downgrade again? You may need to act fast.