Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
For Microsoft 365 Family, the install should be the consumer Microsoft 365 apps package, not a business license package. On a Mac, this usually happens when the wrong account or wrong license is being used during install or activation.
Try this:
- Check which account is signed in for the download.
- For Microsoft 365 Family, sign in with the Microsoft account that owns the Family subscription.
- If a work or school account is being used, business apps or a business license can appear instead.
- Download again from Microsoft 365 apps.
- Select Install apps.
- If the download gets stuck or fails, delete the installer by dragging it to Trash, empty Trash, then download again.
- Use Safari for the download.
- If Safari still does not download correctly:
- Open Safari > Preferences > Security and make sure Enable Javascript is selected.
- Go to Privacy > Manage Website Data > Remove all.
- Start the download again in Safari.
- If Office was activated with the wrong license, remove the existing Office license files and reactivate with the correct Microsoft 365 Family account.
- This is the documented fix when Office for Mac is using the wrong license.
- Check macOS support.
- Microsoft 365 or Office will not install unless the Mac is running a supported operating system.
- If the current installer says the OS is unsupported on a 2017 MacBook Pro, install a lower Office for Mac version that matches the Mac’s macOS version. A Microsoft Q&A answer in the context states Ventura 13 can use Office 16.100, and another accepted answer provides a Mac installer for Office 16.101.
- If a one-time purchase Mac/PC package was bought by mistake, that can also cause an Unsupported operating system message. That specific issue requires contacting Microsoft support. This does not apply to Microsoft 365 subscriptions.
If the main issue is that the Mac cannot upgrade to a newer macOS, the practical path is to install an older Office for Mac build that matches the current macOS version, then sign in with the Microsoft 365 Family account.
References:
- What to try if you can't install or activate Office for Mac
- Download, install, or reinstall Microsoft 365 or Office 2024 on a PC or Mac
- Unsupported operating system error when installing Office
- How can I use my Microsoft 365 Family subscription on my Mac with OS 13.7.8 - Microsoft Q&A
- Problems installing/reinstalling Microsoft 365 - Microsoft Q&A