Product Key Issues

How to Recover a Lost Office 2019 Product Key and Microsoft Account

Phi Hung Vo Oct 10, 2026 869 views

Question details

The user needs to locate the Microsoft account or recover the product key associated with an installed Office 2019 license.

How to Recover a Lost Office 2019 Product Key and Microsoft Account

Product: Microsoft Office 2019
Device & OS: not provided
Scenario: The user wants to reinstall or verify their Office 2019 activation but has forgotten the product key or the associated Microsoft account.
Observed behavior: The user is unable to find their 25-character product key or identify the Microsoft account linked to their Office 2019 purchase.

Before you start

Gather any purchase receipts, order confirmation emails, and a list of your known email addresses before attempting to recover your Microsoft account.

Solution 1Recommended

Check the Account within an Installed Office Application

If Office 2019 is currently installed and working on your computer, you can find the associated Microsoft account directly within the software.

Once Office 2019 is installed and activated, the original product key is no longer needed. The license is digitally linked to your Microsoft account, which you can view from any Office application.

Open an Office App

Launch any Microsoft Office 2019 application, such as Word or Excel.

Navigate to the Account section

Click on 'File' in the top-left corner of the window, then select 'Account' from the left-hand menu.

Locate the Account Information

Under 'User Information' or 'Product Information', you will see the email address associated with the signed-in Microsoft account.

Check for other licenses (if needed)

If the displayed account is incorrect, click 'Switch License' to see if other accounts or licenses are available on the device.

Check the Account within an Installed Office Application

Account Identified: Make sure to record this email address securely, as it serves as your permanent activation key for reinstalling Office 2019 in the future.

Solution 2

Verify Licenses via Services and Subscriptions

You can log into your Microsoft account online to see if the Office 2019 license is linked to it.

Solution 3

Use the Microsoft Account Recovery Tool

If you cannot access the Office application and have forgotten your login credentials, you can recover your account using Microsoft's online password reset tool.

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1. Download the Installer: Visit the official WPS Office website and click 'Download WPS Office Free'.
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Frequently Asked Questions

Do I need the product key after installing Office 2019?

No. Once Office 2019 is installed and activated for the first time, the product key is permanently bound to your Microsoft account. You only need to sign in with that specific account to reinstall or reactivate the software in the future.

Can I find my full 25-character Office 2019 product key in Windows?

No, you cannot. Starting with Office 2013, Microsoft changed how keys are stored locally for security reasons. You can only use the Command Prompt to view the last five digits of the installed product key, which is useful only for identifying which key was used if you manage multiple licenses.

What if I bought Office 2019 from a third-party retailer?

If you purchased a physical copy, the 25-character product key might be printed on a card inside the box. For digital purchases, check your email history (including spam folders) for a receipt or confirmation email from the retailer, as it usually contains the activation key.

Will reinstalling Windows delete my Office 2019 license?

No. Your Office 2019 license is tied to your Microsoft account, not your local Windows installation. After reinstalling Windows, simply log into the Microsoft Services and Subscriptions page with your account and download Office again.

Installation & Activation