A Microsoft file hosting and synchronization service.
A personal Microsoft account and a work or school Microsoft 365 account cannot be merged, but they can be used side by side in OneDrive. The storage stays separate, and files must be copied between them rather than merged.
For the laptop, the most likely issue is that the personal account is no longer properly connected in the OneDrive sync app, even though the old local OneDrive - Personal folder is still visible in File Explorer.
Try this on the personal laptop:
- Open the OneDrive app from the notification area.
- Open Settings.
- Go to the Account tab.
- Check whether the personal account is listed.
- If only the work account is listed, select Add an account.
- Sign in with the personal Microsoft account.
On Windows, after setup completes, the synced folders should appear separately in File Explorer:
- OneDrive – Personal for personal files
- OneDrive - CompanyName for work or school files
Important limits and behavior:
- Only one personal OneDrive account can be added.
- Work and personal OneDrive remain separate.
- Work or school folders cannot be synced or shared into personal OneDrive folders.
- Files can be copied or dragged from one OneDrive folder to the other on the PC.
If the personal account is already present but still not updating, use the OneDrive sync troubleshooting flow for Windows and check whether OneDrive is running and signed in. If storage has been exceeded, OneDrive will not upload, edit, or sync new files.
If the sync app still only prompts for the work account and does not let the personal account reconnect, use Microsoft personal account support through Contact Microsoft Support. If the issue is with the work account, contact the organization IT helpdesk.
References: