The end of support for Windows 10 21H2 comes next month
Briefly

Those still using Windows 10 version 21H2 have about a month until support ends, which means there will be no more security updates or other measures after that.Their options essentially are to upgrade to Windows 10 22H2 or make the move to Windows 11, which would make Microsoft happy.Servicing and support for the Windows 10 21H1 Home, Pro, Pro Education, and Pro Workstation editions ends June 13, with the June 2023 security update - due out that same day - being the last one for those editions.
Read at Theregister
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