Can Office 2019 and Office 2021 run side by side?

Not reliably – Microsoft supports only one click-to-run Office suite per PC. Remove the older suite first.

Is Office 2021 still worth buying in 2026?

If you want a one-time purchase without a subscription and you do not need Copilot or continuous feature updates, yes – security updates for Office LTSC 2021 end in October 2026, so plan your next step; our license type comparison covers the options.

Can I move the license to a new PC?

A retail 2021 Pro Plus key can be uninstalled from the old machine and activated on a new one; OEM keys stay with the first motherboard.

Where is my product key?

In your order email, next to the download link. Keep both – you will need the key again for reinstall or phone activation.

How to Install Office 2021 Professional Plus (Step-by-Step)