Activation Problems

How to Fix Office 2013 Asking for a Sign-In or Product Key

Kushani Nimanthika Sep 27, 2026 869 views

Question details

The user needs to resolve an activation error where Microsoft Office 2013 is repeatedly asking for a sign-in or product key despite having been purchased previously.

Why Office 2013 Is Asking for a Sign-In and How to Fix It

Product: Microsoft Office 2013
Device & OS: not provided
Scenario: Opening Office 2013 applications like Word or Excel after a long period of use, a system update, or a hardware change.
Observed behavior: The software cannot locate the active license and halts functionality, prompting the user to sign in to a Microsoft account or enter a product key to activate.

Before you start

Before proceeding, ensure your computer is connected to the internet and gather any email addresses or physical product keys you may have used during your original purchase.

Solution 1Recommended

Restore License via Your Microsoft Account

Use this solution if your original Office 2013 purchase was redeemed online and linked to a personal Microsoft account.

Digital purchases and modern installations of Office 2013 are often permanently tied to the Microsoft account used during the initial setup. Signing into this account allows the software to verify your license directly from Microsoft's servers.

Verify your digital license

Open a web browser, go to account.microsoft.com, and sign in with the email address you suspect is linked to your Office software.

Check Services & Subscriptions

Navigate to the 'Services and subscriptions' tab at the top of the page. Look through the list to confirm that 'Office 2013' is displayed as an active product.

Sign in to Office 2013

Open an Office 2013 application like Word. When the activation prompt appears, click 'Sign In' and enter the credentials for the verified Microsoft account.

Restore License via Your Microsoft Account

License Restored: Once signed in, close and reopen the application to ensure the activation prompt no longer appears.

Solution 2

Re-activate Using the Original Product Key

Use this method if you purchased a physical copy of Office 2013 and never linked it to an online Microsoft account.

Free Microsoft Office alternative

Switch to WPS Office to Avoid Activation Hassles

Tired of dealing with Microsoft Office activation loops, lost product keys, and frustrating sign-in prompts? WPS Office provides a free, lightweight, and highly compatible alternative that lets you view, edit, and create documents instantly without complex license management.

1. Download the software: Visit the official WPS Office website and click the free download button for your operating system.
2. Install WPS Office: Run the downloaded installer file and follow the quick setup wizard to install the software in minutes.
3. Open your existing files: Launch the application to seamlessly open and edit your previous Word, Excel, and PowerPoint documents.

Free to use with a familiar, easy-to-navigate interface similar to Office 2013.Highly compatible with all major Microsoft Office formats (DOCX, XLSX, PPTX).No complex activation procedures, missing license prompts, or mandatory subscriptions required.

microsoft office alternative - wps office

Frequently Asked Questions

Why did Office 2013 suddenly lose its activation status?

Office 2013 can lose its activation status due to major Windows operating system updates, significant hardware changes (like replacing a motherboard or hard drive), or corrupted license cache files on your computer.

How do I find out which Microsoft account is linked to my Office 2013?

You can check by signing into account.microsoft.com with your various personal email addresses. Navigate to the 'Services and subscriptions' section; if an account is linked, Office 2013 will be explicitly listed there.

Can I still use Office 2013 if I lost my product key?

If you previously tied your Office 2013 installation to a Microsoft account, you do not need the physical product key—you simply need to sign in. However, if it was never linked online and you lose a physical key, you may need to contact the original retailer or Microsoft support with proof of purchase.

Installation & Activation