A family of Microsoft word processing software products for creating web, email, and print documents.
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Hello Bill Townsend
I understand that the older documents open on the new iMac but cannot be edited or otherwise managed. The documents themselves are not tied to the previous subscription, so this is more likely an Office activation, update, or macOS file-permission issue.
Please try the following:
- Open Word and select Word > About Word to confirm it shows Microsoft 365 and version 16.83 or later.
- Select Help > Check for Updates, install all available updates, then fully quit Word using Command + Q and reopen it. Microsoft notes that older Office versions on macOS can enter reduced-functionality mode after July 13, 2026. Refer here for more info: Update Microsoft 365 or Office on macOS or iOS
- In Word, sign out and sign back in using the Microsoft account associated with the new Microsoft 365 Personal subscription.
- If Word still does not allow editing, use Microsoft’s license removal tool and then reactivate Word with that account.
- For files that cannot be deleted, select one in Finder, press Command + I, and check Sharing & Permissions to ensure your Mac account has Read & Write access.
If the problem continues, please let us know the exact message displayed in Word and where the files are stored, such as locally, on OneDrive, or on an external drive.
Feel free reply back to this post and update me on this issue, I'll be happy to help.