If you are using Office 365, follow this link. If you were using Office 2016/13, reinstall the copy and sign-in with the same account. Why choose 64-bit Office version Why should you choose 64 ...

More information is available via this link: Office 365 Education (includes online training material). Note for Windows Desktop Users: The 32-bit installer can be installed on both 32-bit and 64-bit ...