No. You cannot buy a new license from Microsoft or major retailers anymore. It is safer and more cost-effective to buy Windows 11, which is optimized for modern hardware and receives ongoing security patches.
Yes. If you need a specific environment for legacy software that breaks on Windows 11, finding a second-hand key might be necessary. Why Buying Windows 10 is Risky in 2026 Do You Really Have to Stop Using Windows 10? - WIRED is it worth buying windows 10
Maybe. Windows 10 is the last version to support 32-bit processors and legacy BIOS. If you have an older machine that cannot run Windows 11 due to TPM 2.0 or CPU requirements, Windows 10 is your only "stable" Windows option. - WIRED Maybe
As of 2026, for standard home users. Support for the operating system officially ended on October 14, 2025, meaning Microsoft no longer provides free security updates or technical assistance for Home and Pro versions. If you are considering a purchase, The Verdict: Windows 10 vs. Windows 11 As of 2026