Fix Microsoft 365 Not Activated When Windows 11 Pro is Activated
Question details
The user's Windows 11 Pro operating system is successfully activated, but their Microsoft 365 applications remain unactivated or indicate an expired trial.

- Product
- Microsoft 365
- Device & OS
- Windows 11 Pro
- Scenario
- Attempting to use Microsoft 365 applications after setting up a new device or formatting a Windows 11 Pro computer.
- Observed behavior
- Microsoft 365 prompts for activation, asks for a product key, or displays a subscription expired warning despite the operating system being fully activated.
Ensure you have the login credentials for the Microsoft account that was originally used to purchase or register your Microsoft 365 subscription.
Verify Microsoft 365 Subscription and Re-sign In
Check your Microsoft account for an active Microsoft 365 subscription and refresh your Office application login to restore access.
Windows 11 Pro and Microsoft 365 use completely separate licensing systems. Activating your Windows operating system with a product key does not automatically activate Microsoft 365 apps. You need a distinct, active subscription tied to your Microsoft account to use Office features.
Open a web browser and navigate to account.microsoft.com/services.
Sign in with the exact Microsoft account you originally used to purchase or register your Microsoft 365 subscription.
Locate the Subscriptions section and verify that your Microsoft 365 subscription is currently active. If no active subscription is listed, your preinstalled trial may have expired, and you will need to renew or purchase a new plan.
Once you have confirmed an active license, open any Microsoft 365 application such as Word or Excel. Sign out of your current profile, then sign back in using the licensed Microsoft account to apply the activation.

Try WPS Office: A Free and Highly Compatible Alternative
If your Microsoft 365 trial has expired and you prefer not to purchase a new subscription, WPS Office provides a free, lightweight, and easy-to-use alternative. You can continue creating and editing your documents without worrying about activation issues.
- 1. Download the installer: Visit the official WPS Office website and click the free download button for Windows.
- 2. Install the software: Run the downloaded installer file and follow the simple on-screen instructions to set up WPS Office on your Windows 11 Pro device.
- 3. Open and edit files: Launch WPS Office to instantly open, edit, and save your existing Word, Excel, and PowerPoint files for free.

Frequently Asked Questions
Does my Windows 11 Pro license include Microsoft 365 for free?
No. Windows 11 Pro and Microsoft 365 are separate products. A Windows license only activates the operating system, while Microsoft 365 requires its own dedicated subscription.
Why did my Microsoft 365 stop working after formatting my PC?
Formatting your PC removes the local activation data. While you can reactivate Windows 11 Pro using your digital license or product key, you must sign back into Microsoft 365 with the specific Microsoft account that holds your active Office subscription.
Can I continue using Microsoft 365 if my trial expires?
Once your preinstalled Microsoft 365 trial expires, the applications will switch to a restricted mode where you can only view documents. To restore editing features, you must either purchase a subscription or switch to a free alternative like WPS Office.




