Activation Problems

Fix Microsoft 365 Not Activated When Windows 11 Pro is Activated

Huma Ashraf ChHuma Ashraf Ch Oct 22, 2026 869 views

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.

How to Fix Microsoft 365 Not Activated When Windows 11 Pro is Activated
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.
Before you start

Ensure you have the login credentials for the Microsoft account that was originally used to purchase or register your Microsoft 365 subscription.

Solution 1Recommended

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.

1
Visit the Microsoft Services page

Open a web browser and navigate to account.microsoft.com/services.

2
Sign in to your account

Sign in with the exact Microsoft account you originally used to purchase or register your Microsoft 365 subscription.

3
Check subscription status

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.

4
Refresh your Office login

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.

Verify Microsoft 365 Subscription and Re-sign In
Preinstalled Trials: Many new Windows 11 computers come with a preinstalled Microsoft 365 trial. Once this trial period ends, entering your Windows 11 Pro product key will not restore or extend the Office trial.
Free Microsoft Office alternative

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. 1. Download the installer: Visit the official WPS Office website and click the free download button for Windows.
  2. 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. 3. Open and edit files: Launch WPS Office to instantly open, edit, and save your existing Word, Excel, and PowerPoint files for free.
100% free with no forced subscription required to edit documents.Fully compatible with Microsoft Office formats, including .docx, .xlsx, and .pptx.Lightweight design that runs smoothly on Windows 11 without slowing down your PC.Familiar tabbed user interface for a seamless migration from Microsoft Office.
microsoft office alternative - wps office

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.