Microsoft Account Errors

How to Update Office and OneDrive After Changing Your Microsoft Account Email

Chanuka Geekiyanage Oct 23, 2026 869 views

Question details

The user needs to update their sign-in credentials in Microsoft Office and OneDrive after changing the primary email address associated with their Microsoft account.

Update Office and OneDrive After Changing Your Microsoft Account Email

Product: Microsoft Office and OneDrive
Device & OS: not provided
Scenario: A user has successfully changed their Microsoft account's primary email address online, but their local Office applications and OneDrive are still attempting to use the old email address.
Observed behavior: Office and OneDrive remain linked to the previous identity, potentially causing file synchronization issues or account validation prompts.

Before you start

Ensure you have your new Microsoft account email address and password ready, and verify that all your local files have finished syncing to the cloud before making account changes.

Solution 1Recommended

Sign Out and Re-sign Into Microsoft Office

Refresh your account credentials directly within any Microsoft Office desktop application to apply the new email address.

Office applications often cache your sign-in information. To force the application to recognize your new primary email alias, you must manually sign out of the old account and sign back in.

Open an Office App

Launch any Microsoft Office application installed on your computer, such as Word, Excel, or PowerPoint.

Navigate to Account Settings

Click on 'File' in the top-left corner of the application window, then select 'Account' from the menu on the left side.

Sign Out of the Old Account

Under the 'User Information' section, locate your old email address and click the 'Sign out' link. Confirm the prompt to remove the account from your Office apps.

Restart and Sign In

Close all open Office applications. Reopen Word or Excel, click 'Sign in', and enter your newly updated Microsoft account email address and password.

Sign Out and Re-sign Into Microsoft Office

Activation Restored: Once signed in with the correct credentials, your Microsoft Office license will automatically reactivate and connect to your updated account.

Solution 2

Unlink and Reconnect OneDrive

If OneDrive is still trying to use your old email identity, you will need to unlink your PC from the old credentials and sign in fresh.

Free Microsoft Office alternative

Switch to WPS Office for Hassle-Free File Management

Tired of dealing with Microsoft account syncing errors and complicated account updates? WPS Office offers a seamless, lightweight alternative that supports all major document formats without the strict account binding of MS Office.

1. Download and Install: Visit the official WPS website to download the free installation package for your operating system.
2. Sign In or Skip: Open WPS Office. You can choose to sign in with a simple email or social account for cloud features, or simply skip and use the local editor.
3. Open Existing Files: Double-click your existing Microsoft Office documents to open and edit them directly in WPS Office with perfect formatting preservation.

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Frequently Asked Questions

Will I lose my files if I sign out of my Office account?

No, your local files will remain safely on your device. Any files saved to the cloud will remain in your Microsoft account and will become accessible again as soon as you sign back in.

Why isn't my new email address showing up in OneDrive automatically?

OneDrive often caches your old login credentials to maintain continuous syncing. You need to manually go into OneDrive Settings > Account and select 'Unlink this PC' to clear the cache and enter your new email.

What if my Office apps still show the old email after signing out and back in?

Sometimes Windows caches account identities. Go to your Windows Settings > Accounts > Email & accounts, find the old Microsoft account, and remove it. Then, restart your computer and sign into Office again.

Do I need to reinstall Office if changing the email doesn't work?

If unlinking and signing out fails to update your profile, reinstalling is a last resort. Before doing so, ensure you have your new login credentials handy, then uninstall Office from the Control Panel and download a fresh copy from your Microsoft account dashboard.

Login & Account Issues