Product Key Issues

How to Check Whether an Office 2016 Product Key Is Valid

Tauseeq Magsi Sep 27, 2026 869 views

Question details

The user needs to know how to verify if their Microsoft Office 2016 product key or license is still valid and active.

Office 2016 product key activation guide

Product: Microsoft Office 2016
Device & OS: not provided
Scenario: Verifying the license status of a previously purchased or activated Office 2016 product.
Observed behavior: The user wants to check the license validity, but relies on the physical product key which is generally no longer needed since the license is permanently linked to a Microsoft account after activation.

Before you start

Ensure you have the login credentials for the Microsoft account that was originally used to purchase or activate your Office 2016 suite.

Solution 1Recommended

Verify Your Office License via Your Microsoft Account

This is the most reliable method. Once activated, Office 2016 licenses are digitally linked to your Microsoft account, making the original 25-character product key obsolete.

Microsoft associates your Office Professional 2016 license directly with your email address. Verifying the license online confirms its validity without needing the physical card or email receipt.

Visit the Microsoft Account portal

Open your web browser and navigate to the official Microsoft account dashboard at https://office.com/myaccount.

Sign in to your account

Enter the email address and password associated with the Microsoft account you used when you first activated Office 2016.

Navigate to Services & subscriptions

Click on the 'Services & subscriptions' tab located at the top of the page to view all active and past Microsoft services linked to your profile.

Locate your Office 2016 license

Scroll through your purchased products. If your Office 2016 product key is valid and was successfully redeemed, it will appear here as an active license ready for download or management.

End of Support Notice: Please note that Microsoft Office 2016 support ends on October 14, 2025. After this date, the software will no longer receive security updates or technical support.

Solution 2

Check Activation Status Within an Office Application

Use this method if you already have Office 2016 installed on your computer and want to confirm that the software recognizes the valid license.

Free Microsoft Office alternative

Switch to WPS Office as Office 2016 Support Ends

With Microsoft Office 2016 reaching the end of its support lifecycle on October 14, 2025, continuing to use it may expose your system to security risks. WPS Office provides a free, lightweight, and highly compatible alternative to Microsoft Office, allowing you to seamlessly create, edit, and save your documents without worrying about expensive licenses or complex product keys.

1. Download the installer: Visit the official WPS website and click the free download button to get the latest version.
2. Install WPS Office: Run the downloaded installer and follow the simple on-screen instructions to set up the software.
3. Open your files instantly: Launch WPS Office and directly open your existing Word, Excel, or PowerPoint files with perfect formatting.

100% compatible with Microsoft Office formats including .docx, .xlsx, and .pptxFree to use without the hassle of managing complex product key activationsLightweight installation with blazing fast launch speeds on any deviceFamiliar tabbed user interface for a zero-learning-curve transition from Office 2016

microsoft office alternative - wps office

Frequently Asked Questions

Do I need my original 25-character product key to reinstall Office 2016?

Generally, no. Once you have activated Office 2016 for the first time, the license is permanently linked to your Microsoft account. You can reinstall the software directly from the 'Services & subscriptions' page of your account without needing the original product key.

What happens when Office 2016 reaches its end of support in 2025?

After October 14, 2025, Microsoft will no longer provide technical support, bug fixes, or security updates for Office 2016. While the software will continue to function, your computer may become more vulnerable to security risks and viruses, so upgrading to a supported alternative is highly recommended.

Why does my Office 2016 product key say it has already been used?

This error usually means the product key was previously redeemed and is already tied to a Microsoft account. If you were the one who originally activated it, you simply need to sign in with the email address you used during that initial activation rather than entering the key again.

Installation & Activation