Fix Microsoft 365 Cannot Find Account After Reinstalling Office on Mac
Question details
The user is unable to sign into Microsoft 365 after reinstalling it on a Mac because the application states the account does not exist, even though the credentials work perfectly on the Microsoft website.
- Product
- Microsoft 365
- Device & OS
- Mac
- Scenario
- Signing in to activate Microsoft 365 applications after a fresh reinstallation on macOS.
- Observed behavior
- The sign-in prompt displays an 'account not found' error. During reinstallation, the installer occasionally requests personal and credit card details, then abruptly states that an account already exists.
Verify that you are using the exact email address tied to your active Microsoft 365 subscription, and ensure your Mac has a stable internet connection to communicate with the activation servers.
Clear Existing Office Licenses and Reinstall
Removing corrupted or conflicting license files on your Mac ensures a clean activation state for Microsoft 365.
Often, residual license files from previous Office installations conflict with the new installation, causing the activation server to fail to recognize your account correctly.
Visit the official Microsoft Support website and download the Office License Removal Tool designed for macOS.
Open the downloaded .pkg file, follow the on-screen prompts to remove all existing Office licenses from your Mac, and then restart your computer.
Log into your Microsoft account via a web browser, go to your 'Services & subscriptions' page, and download the latest Microsoft 365 installer for Mac.
Launch Microsoft Word or Excel, and enter your account email and password when prompted to activate the suite.
Contact Microsoft Support for Account Sync Issues
If the software loops between 'account not found' and asking for billing details, backend support intervention is required.
Switch to WPS Office for a Hassle-Free Mac Experience
If Microsoft 365 account and licensing errors are preventing you from getting your work done, consider switching to WPS Office. It is a highly compatible, robust, and free alternative that lets you open, edit, and create documents on your Mac without battling complex subscription validations.
- 1. Download for Mac: Visit the WPS Office website and download the Mac installer.
- 2. Install and Open: Drag the WPS Office icon to your Applications folder and launch it without worrying about license removal tools.
- 3. Resume Your Work: Open your existing Office files directly in WPS Office and continue working seamlessly.
Frequently Asked Questions
Why does Microsoft 365 say my account doesn't exist when I can log in online?
This usually happens due to corrupted local license files on your Mac, cached keychain credentials, or a temporary synchronization delay between the Microsoft 365 desktop application and Microsoft's activation servers.
What should I do if the installer asks for my credit card during reinstallation?
If you already have an active Microsoft 365 subscription, do not enter your credit card information. Cancel the prompt and contact Microsoft Support, as this signifies a backend profile conflict.
How do I completely remove Microsoft Office license files on a Mac?
You must download and run the official Microsoft License Removal Tool for Mac. This utility safely wipes old or corrupted activation data from your system, allowing for a clean sign-in attempt.
Will reinstalling macOS fix the Microsoft 365 account error?
Reinstalling your entire operating system is unnecessary. Using the License Removal Tool and completely uninstalling the Office applications from your Applications folder is usually sufficient to fix the issue.
