Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
To clarify, Microsoft 365 and Windows are two different products. Microsoft 365 is an Office subscription, while Windows is the operating system installed on your computer.
To help isolate the issue:
Which Office version are you trying to install (Microsoft 365, Office Home 2024, or another version)?
Are you receiving a specific error message when you try to download or install Office?
Can you sign in to your Microsoft account here: https://account.microsoft.com/services
Can you see your Office subscription or license listed there?