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How to Fix Account Switch Detected When Activating Office on Mac
Question details
Users encounter an 'Account Switch Detected' error message when attempting to activate Microsoft Office applications on a Mac.
- Product
- Microsoft Office
- Device & OS
- macOS
- Scenario
- Activating Word, Excel, PowerPoint, or Outlook with a new or different Microsoft 365 or standalone license account.
- Observed behavior
- The activation fails because the system detects an account switch, which is typically caused by saved Office license files or an outdated Microsoft account cached on the macOS device.
Ensure you have your correct Microsoft 365 or standalone Office account credentials ready, and completely close all running Office applications on your Mac.
Use the Microsoft Office License Removal Tool
Running Microsoft's official license removal tool is the most effective way to clear out old, cached sign-in and licensing information that causes the account switch error.
The 'Account Switch Detected' issue usually stems from hidden, lingering license files from a previous sign-in. Manually hunting down these files can be difficult, so Microsoft provides a dedicated script tool to automatically wipe the old license data.
Navigate to the official Microsoft support page (search for 'how to remove Office license files on a Mac') and download the official License Removal Tool.
Open the downloaded .pkg file from your Mac's Downloads folder. Follow the on-screen prompts in the setup wizard and click 'Install' to execute the script.
Once the tool displays a success message indicating the licenses have been removed, close the window and restart your Mac to ensure the system cache is fully cleared.
Open any Microsoft Office application, such as Word. You will be prompted to activate the software. Sign in with the email address and password associated with your valid standalone or Microsoft 365 subscription.
Try WPS Office for Mac to Avoid Activation Hassles
If you are tired of dealing with complex license activations, cached credential errors, or costly subscriptions, consider switching to WPS Office. It provides a highly compatible, lightweight, and free alternative that lets you get straight to work.
- 1. Download WPS Office: Visit the official WPS website and download the Mac version of the software.
- 2. Install the Application: Open the downloaded file and drag the WPS Office icon to your Applications folder.
- 3. Start Creating: Launch WPS Office and immediately begin opening, editing, or creating new documents without complex license verifications.
Frequently Asked Questions
Why does my Mac say 'Account Switch Detected' in Office?
This happens when the Office app detects cached license files from a previous or different Microsoft account on your Mac, conflicting with the new account you are currently trying to use for activation.
Will removing license files delete my Office documents?
No, removing the license files only clears the software's activation cache. Your personal files, documents, and the Office applications themselves remain entirely safe and untouched.
Do I need to reinstall Microsoft Office after running the license removal tool?
Reinstallation is usually not required. After running the tool and restarting your Mac, you simply need to open an Office app and sign in with your correct account to reactivate the software.
