License & Subscription Issues

How to Use the Same OneDrive After Upgrading Microsoft 365 Plans

Tauseeq MagsiTauseeq Magsi Oct 22, 2026 868 views

Question details

The user needs to maintain access to their original OneDrive files after upgrading from Microsoft Apps for Business to Microsoft 365 Business Standard.

How to Use the Same OneDrive After Upgrading Microsoft 365 Business Plans
Product
Microsoft 365
Device & OS
not provided
Scenario
Upgrading a business plan subscription in the Microsoft 365 Admin Center.
Observed behavior
The upgrade resulted in separate user accounts, email addresses, and isolated OneDrive storage locations instead of seamlessly applying the new license to the existing account.
Before you start

Ensure you have administrator access to the Microsoft 365 admin center and have credentials for both the original and newly created accounts before starting the file transfer.

Solution 1Recommended

Migrate OneDrive Files to the New Licensed Account

Since separate Microsoft 365 accounts cannot be merged, you must manually transfer your files from the original unlicensed account to the newly licensed one.

Two distinct Microsoft 365 accounts cannot be merged or bundled into one. If a new business email account was created separately during the upgrade, it cannot simply become an alias of the original @username.onmicrosoft.com account.

1
Log in to the original account

Sign in to your original Microsoft 365 account (e.g., Apps for Business) and open the original OneDrive location.

2
Download or sync files

Select the files you wish to keep and download them locally to your computer, or use the OneDrive desktop client to sync the files locally.

3
Upload to the new account

Sign out of the original account, log in with the new Microsoft 365 Business Standard account, and upload or sync the previously downloaded files into the new OneDrive location.

4
Automate with Power Automate (Optional)

Use the official Microsoft Power Automate template specifically designed for copying files between different OneDrive accounts or folders to speed up large transfers.

Migration Deadline: Ensure you complete the file migration before the original subscription expires, as the original OneDrive and SharePoint storage will eventually be deleted.
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Frequently Asked Questions

Can I merge two separate Microsoft 365 accounts?

No, two separate Microsoft 365 accounts cannot be merged or bundled. If a new account was inadvertently created during an upgrade, you will need to manually transfer files and data from the old account to the new one.

Will my original OneDrive files disappear after I upgrade?

If your upgrade resulted in a new, separate account and the original subscription expires, the original OneDrive and SharePoint storage will eventually be deleted. It is critical to migrate your files to the actively licensed account before the old subscription expires.

How do I avoid creating a new account when upgrading my Microsoft 365 plan?

To prevent generating a new account, always use the 'Upgrade' option located within the Microsoft 365 Admin Center under 'Billing' > 'Your products'. Avoid using the manual domain-account sign-up process for new plans, as this creates isolated accounts.