Activation Problems

How to Activate Microsoft 365 Subscription After Purchase

Huda Qurayshi Oct 13, 2026 868 views

Question details

The user needs to activate their recently purchased Microsoft 365 subscription, but Office keeps prompting them to buy it again.

How to Activate Microsoft 365 Subscription After Purchase

Product: Microsoft 365
Device & OS: Windows
Scenario: Activating Office applications after successfully completing a Microsoft 365 payment.
Observed behavior: Office repeatedly asks the user to purchase the product again, failing to recognize the completed payment, likely due to a mismatched Microsoft account or cached credentials.

Before you start

Ensure you have the exact email address and password for the Microsoft account used to purchase your Microsoft 365 subscription.

Solution 1Recommended

Sign In to Office with the Correct Microsoft Account

Activate your subscription by ensuring you are logged into the exact account used for the purchase.

The most common cause of this activation issue is signing into the newly installed Office suite with a different Microsoft account than the one associated with your payment.

Open an Office application

Install Office and open Word or another Office application. In the 'What's New' box that appears, select 'Get Started'.

Manually trigger sign-in

If you are not prompted to sign in and do not see the 'What's New' box, open a blank file and navigate to File > New from Template > Sign In.

Enter subscription credentials

On the activation screen, select 'Sign in'. Enter the email address specifically associated with your Microsoft 365 subscription purchase and click 'Next'.

Complete activation

Enter your password and select 'Sign in'. Office will automatically check your license online and activate the product.

Sign In to Office with the Correct Microsoft Account

Account Mismatch: Double-check your email inbox for the purchase receipt to confirm exactly which Microsoft account email is tied to the active subscription.

Solution 2

Clear Stored Office Credentials in Windows

If Office still fails to activate or remembers an old account, clearing cached Windows credentials will force a fresh login.

Free Microsoft Office alternative

Avoid Activation Hassles with WPS Office

Tired of dealing with complex subscription activations, account mismatches, and login loops? Switch to WPS Office, a free, lightweight, and highly compatible alternative to Microsoft Office that lets you start working immediately without the subscription headaches.

No complicated subscription activation required to access core document editing features.Fully compatible with Microsoft Office formats, including .docx, .xlsx, and .pptx.Free, lightweight, and fast-loading, ensuring smooth performance on any device.Familiar user interface makes transitioning from Microsoft Office seamless and easy.

microsoft office alternative - wps office

Frequently Asked Questions

Why is Office asking me to buy it again after I already paid?

This usually happens if you are signed into the Office application with a different Microsoft account than the one you used to purchase the subscription. Signing out and logging back in with the correct email address will typically resolve the issue.

What should I do if the 'What's New' box doesn't appear when I open Word?

If the automatic activation prompt doesn't show up, you can manually trigger the sign-in process. Open a blank document, click on 'File' in the top ribbon, select 'New from Template', and click 'Sign In'.

Will clearing my Windows credentials delete my Office files?

No, clearing stored Office credentials in the Windows Credential Manager only removes saved login sessions and passwords. Your personal documents, spreadsheets, and other files remain completely safe and untouched.

How do I know which Microsoft account is linked to my purchase?

You can verify your purchase by logging into account.microsoft.com with your email addresses and checking the 'Services & subscriptions' section to see exactly where your active Microsoft 365 license is applied.

Installation & Activation