License & Subscription Issues

Do You Need to Repurchase Microsoft Office After Reinstalling Windows?

Partner Editor Oct 1, 2026 869 views

Question details

The user wants to know if they must buy Microsoft Office 2019 again after a Windows reinstallation, especially when prompted to sign in for activation and the original account is unknown or deleted.

Do I Need to Repurchase Office After Reinstalling Windows?

Product: Microsoft Office 2019
Device & OS: Windows
Scenario: Setting up Office applications again after completing a clean reinstallation or factory reset of the Windows operating system.
Observed behavior: Office 2019 requests a sign-in for activation, but the license does not automatically carry over with the Windows activation, leaving the user unable to access Office without the original account.

Before you start

Before proceeding, gather any email addresses, digital receipts, or product keys you might have used when you first purchased or activated Microsoft Office.

Solution 1Recommended

Sign In with the Original Microsoft Account

Use this method if you still have access to the Microsoft account originally used to activate Office 2019, as the license is tied to the account rather than the Windows installation.

Microsoft Office 2019 licenses are permanently linked to the Microsoft account used during the initial setup. Reinstalling Windows removes the local activation files, but your digital license remains safe in the cloud.

Open an Office Application

Launch any Microsoft Office program, such as Word or Excel, from your Windows Start menu.

Trigger the Activation Prompt

A 'Sign in to set up Office' or 'Activate Office' screen should appear automatically. If not, go to File > Account and click 'Sign In'.

Enter Original Credentials

Type in the exact email address and password of the Microsoft account that was originally used to purchase or redeem Office 2019 to restore your license.

Sign In with the Original Microsoft Account

Account Matching is Required: A newly created Microsoft account cannot be used to activate an old license. You must use the exact account associated with the original purchase.

Solution 2

Contact Microsoft Support for Lost or Deleted Accounts

If you forgot the original account details or if the account was deleted, you must contact support to verify if the license can be recovered.

Free Microsoft Office alternative

Try WPS Office Before Repurchasing Microsoft Office

If your Microsoft Office license is lost after reinstalling Windows or deleting your account, you do not have to spend money on a new one right away. WPS Office is a powerful, free, and lightweight alternative that lets you view, edit, and create documents effortlessly.

1. Download the Installer: Visit the official WPS website and download the free WPS Office installation package for Windows.
2. Install on Your Reinstalled Windows: Run the installer and follow the simple on-screen instructions to set up the software in minutes.
3. Open Your Existing Files: Double-click your existing Microsoft Office documents to open and continue editing them seamlessly in WPS Office.

Completely free to use with no mandatory subscriptions or expensive license repurchases.Highly compatible with Microsoft Word, Excel, and PowerPoint formats (.docx, .xlsx, .pptx).Lightweight installation that runs smoothly even on freshly reinstalled or older Windows PCs.Familiar user interface makes it incredibly easy to migrate from Microsoft Office.

microsoft office alternative - wps office

Frequently Asked Questions

Why is Office asking for activation after I just reset Windows?

Resetting or reinstalling Windows wipes the local activation files from your hard drive. Because the software is freshly installed, you must sign in again with the Microsoft account tied to your Office purchase to reactivate it.

Can I use a new Microsoft account to activate my old Office 2019 license?

No. An Office 2019 license is permanently bound to the Microsoft account used during the initial activation. A newly created account cannot claim an already linked license.

What happens to my Office license if I delete my Microsoft account?

If the Microsoft account associated with your Office digital license is permanently deleted, the license is also lost. You cannot transfer it to another account, meaning you will need to purchase a new license or switch to a free alternative.

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