Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
Microsoft Office 2016 was the last version of Office that worked on Windows 7 ... but, like all versions of Microsoft Office, it isn't free.
As far as I can tell, however, you can use the free online Microsoft Office apps on Windows 7. You don't download and install anything. You just use them by going to Office.com. See https://www.microsoft.com/en-us/microsoft-365/free-office-online-for-the-web(scroll to the bottom).
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