Hi! Generally, the Office Home & Student license is unique and can only be installed on one computer. Did you acquire this license from Microsoft, third-party websites, or did it come pre-installed on a computer?
- Go to https://account.microsoft.com/devices > Sign in with the same account linked to Office and your old Windows > Delete the old device. Caution: Do not delete your current device or it will be blocked.
- Then, go to https://account.microsoft.com/account?lang=en-us > Sign in > Subscriptions > Download Office. You can also download it from https://www.office.com/
- When installing Office, sign in with the same account. If an error occurs and you haven't linked your Windows to your Microsoft account yet, link it in Settings > Accounts.