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How to Find the Microsoft Account Used to Activate Office 2021
Question details
The user needs to identify the Microsoft account that was used to activate Office Home and Business 2021, and resolve a display issue where the software shows as Microsoft 365 after a system update.
- Product
- Microsoft Office 2021
- Device & OS
- Windows
- Scenario
- Managing activation licenses for computers after an automatic update caused the Office version to display incorrectly.
- Observed behavior
- Office Home and Business 2021 applications are incorrectly identifying themselves as Microsoft 365, and the original activation account is unknown.
Ensure you have administrator access to the affected Windows computers and gather a list of potential organizational email accounts that may have been used for the initial activation.
Remove Conflicting Microsoft 365 Trial and Verify Account
Use this solution to remove preinstalled Microsoft 365 versions that conflict with Office 2021 and uncover your true activation account details.
Windows updates do not normally replace a perpetual Office 2021 license with Microsoft 365. This issue typically occurs when a preinstalled Microsoft 365 trial on the PC takes over the file associations after an update.
By removing the conflicting Microsoft 365 trial, you can restore access to your Office 2021 application interface, which will then accurately display your activation account.
Click the Windows Start button, type 'Apps and Features' in the search bar, and press Enter to open the system settings.
Scroll through the app list or use the search box to find 'Microsoft 365'. Click on it and select 'Uninstall' to remove the trial version from your computer.
Launch an Office 2021 application, such as Word or Excel. You may be prompted to repair the installation if file associations were disrupted.
Click on 'File' in the top-left corner, then select 'Account' (or 'Office Account') from the bottom of the left sidebar. Look under 'Product Information' and 'Belongs to:' to see the Microsoft account email used for activation.
Check Microsoft Account Services Online
Log into the Microsoft website directly to verify which account holds your Office Home and Business 2021 licenses.
Switch to WPS Office for Hassle-Free Software Management
Avoid confusing activation loops, missing Microsoft accounts, and unexpected updates that replace your software version. WPS Office provides a lightweight, free, and highly compatible alternative to Microsoft Office that is easy to deploy and manage on multiple computers.
- 1. Download the Installer: Visit the official WPS Office website and click the 'Free Download' button.
- 2. Run the Installation: Open the downloaded setup file and follow the simple on-screen instructions to install WPS Office on your computer.
- 3. Start Creating: Launch WPS Office to immediately begin opening, editing, and saving your existing Microsoft Office documents without worrying about complex account activations.
Frequently Asked Questions
Why does my Office 2021 suddenly show as Microsoft 365?
This happens when a preinstalled trial of Microsoft 365 exists on your computer. During a system update, the Microsoft 365 app may take priority over your installed Office 2021, changing how the applications identify themselves. Uninstalling Microsoft 365 resolves this.
Can a Windows update convert my Office 2021 into a subscription?
No, a standard Windows or Microsoft update will not convert a perpetual Office 2021 license into a Microsoft 365 subscription. The issue is purely a display or software conflict caused by multiple versions of Office being installed simultaneously.
How can I check the activation status of my Office 2021?
To check your activation status, open any Office application like Word. Click on 'File' in the top menu, navigate to 'Account' on the bottom left, and look under 'Product Information' on the right side of the screen. It will show if the product is activated and which account it belongs to.
