Microsoft 365 product key from Apple Store not recognized

That email you received containing the product key may have had a redemption time limit associated with it which you allowed to expire. Contact the online Apple Store, or the physical Apple Store, depending where you obtained the Microsoft 365 software to pursue this.

No Apple employees are participating in these strictly fellow user supported communities and your help will be in the first paragraph.

AFAIK, first, some purchasing details: Microsoft 365 (formerly Office 365) is a monthly subscription service. The purchased (“perpetual”) version is Office 2024. “Perpetual” in Microsoft licensing usage doesn’t mean you’ll get newer versions of Office (you won’t), or that 2024 will be supported and work forever (it won’t). MIcrosoft 365 does get newer versions, for as long as you subscribe. What you need to do here varies by what you bought.

• https://support.microsoft.com/en-us/office/lifecycle/officeinstall/download-install-or-reinstall-microsoft-365-or-office-2024-on-a-pc-or-mac

Here is an earlier part of this same discussion, started over at Microsoft:

• https://learn.microsoft.com/en-us/answers/questions/5957500/product-key-is-not-recognized-when-entered-via-mic

Here is the usual license setup:

• https://learn.microsoft.com/en-gb/answers/questions/5875977/microsoft-365-product-key-not-recognised

Here are some related troubleshooting suggestions:

• https://support.microsoft.com/en-us/microsoft-365-activation-licensing/microsoft-office-activation-and-the-mac-app-store
• https://support.microsoft.com/en-us/microsoft-365-activation-licensing/what-to-try-if-you-can-t-install-or-activate-office-for-mac
• https://learn.microsoft.com/en-us/answers/questions/5957500/product-key-is-not-recognized-when-entered-via-mic

Here is a free app suite that works quite well with Office documents, pending a resolution of the Microsoft licensing:

• https://www.libreoffice.org/