MIcrosoft 365 One Drive file sharing

This happens when the same Microsoft account is being used in OneDrive or Office on multiple PCs. A Microsoft 365 Family subscription gives each person separate storage only when each person signs in with their own Microsoft account. It does not merge storage by subscription, but using the same sign-in can make one person’s OneDrive files appear on another device.

To stop access to the files:

1. Confirm the subscription share is set up correctly.
   • The subscription owner should go to the Microsoft account services page and open Sharing.
   • Verify the daughter is listed as someone the subscription is shared with.
2. On the daughter’s PC, sign out of the wrong OneDrive account.
   • Select the OneDrive cloud icon.
   • Go to Help & Settings > Settings > Account.
   • Check which Microsoft account is signed in.
   • If it is the parent’s account, select Unlink this PC.
   • Then sign in again with the daughter’s own Microsoft account, the same one that accepted the family sharing invitation.
3. If Office apps also show the wrong subscription, sign out there too.
   • Open Word or Excel.
   • Go to File > Account.
   • Sign out of the old account.
   • Sign back in with the daughter’s Microsoft account that has the shared Microsoft 365 Family benefit.
4. If files were shared directly from OneDrive, remove that sharing.
   • In OneDrive, select the file or folder.
   • Select Information in the upper-right corner.
   • Open Manage access.
   • Remove the sharing link with X or remove access for specific people.
5. If the parent wants to stop sharing Microsoft 365 benefits entirely, stop sharing the subscription.
   • Go to the Microsoft account services page, choose Sharing, find the person, and select Stop sharing.
   • This removes subscription benefits such as extra OneDrive storage and desktop apps.

Expected result: after the daughter’s PC is signed in to OneDrive with her own Microsoft account, her File Explorer should show only her own OneDrive storage unless files or folders were explicitly shared.

• Manage Microsoft 365 subscription sharing | Microsoft Support
• OneDrive for multiple users without everyone’s files being pulled into a shared pool - Microsoft Q&A
• Switched from my personal account to a family account owned by my cousin and I no longer have access to my files. - Microsoft Q&A
• OneDrive - Personal
• Stop sharing a Microsoft 365 subscription