If Microsoft Office displays "Unlicensed Product", "Product Activation Failed", or asks you to activate Office even after installation, it usually means that Office hasn't been activated successfully or there is a licensing conflict on your PC.
This guide will help you identify the cause and activate your copy of Microsoft Office.
💡 Before You Begin
Before starting, make sure you have:
✅ Your Microsoft Office product key
✅ An internet connection
✅ Administrator access to your Windows PC
✅ All Microsoft Office applications closed (Word, Excel, Outlook, etc.)
Common Causes
This issue is commonly caused by one of the following:
The Office product key hasn't been activated.
An incorrect Office edition is installed.
A previous Microsoft 365 or Office license is conflicting with your new installation.
You're signed into a different Microsoft account than the one used to redeem your Office license.
Office activation hasn't completed successfully.
Step 1 – Verify Which Version of Office Is Installed
Your installed Office edition must match the product key you purchased.
Open any Office application (such as Word).
Select File → Account.
Under Product Information, check the Office edition that is installed.
If the installed version doesn't match your product key, uninstall the incorrect version and install the correct edition.
Need help?
See our guide:
Office Shows the Wrong Version or Uses the Wrong Product Key
Step 2 – Activate Office Using Your Product Key
If you purchased a product key but haven't activated Office yet:
Open your Office application.
Select Activate Office if prompted.
Enter your 25-character product key.
Complete the activation process.
If your Office product is redeemed through a Microsoft account (such as Office Home & Business or Office Home & Student), sign in using the same Microsoft account used during redemption.
Step 3 – Check for Multiple Office Licenses
Older Office installations can prevent the correct license from being detected.
Open Settings.
Go to Apps → Installed apps.
Look for other versions of:
Microsoft 365
Office 365
Microsoft Office
Remove any versions that you no longer use.
Restart your PC.
Step 4 – Sign Out and Sign Back In
If your Office license is linked to a Microsoft account:
Open any Office application.
Select File → Account.
Select Sign out.
Close all Office applications.
Reopen an Office application.
Sign back in using the Microsoft account associated with your Office license.
Step 5 – Update Office
Installing the latest Office updates can resolve activation issues.
Open any Office application.
Select File → Account.
Select Update Options → Update Now.
Allow Office to install any available updates.
Step 6 – Restart Your Computer
After completing the previous steps:
Restart your PC.
Open an Office application.
Check whether the Unlicensed Product message has disappeared.
Still Seeing "Unlicensed Product"?
If Office still isn't activated, the issue may be related to:
An invalid or already redeemed product key.
A Microsoft account licensing issue.
A license conflict from a previous Office installation.
Please contact our support team and include:
Your order number
A screenshot of the activation message
A screenshot of File → Account showing the Product Information section
The Office edition you have installed
This will help us identify the issue and provide the appropriate solution.