Fix the Product Activation Failed Error in Microsoft 365
Question details
Users experience an activation failure when a new Windows 11 computer with a Microsoft 365 subscription incorrectly identifies the installed software as Office Professional Plus 2016.
- Product
- Microsoft 365
- Device & OS
- Windows 11
- Scenario
- Activating a paid Microsoft 365 subscription on a new computer.
- Observed behavior
- The system displays a 'Product Activation Failed' error and incorrectly identifies the active software as Office Professional Plus 2016 instead of Microsoft 365.
Make sure you have administrative access to your Windows 11 PC and have your Microsoft 365 account credentials ready before proceeding with the license removal.
Remove the Embedded Office 2016 License using Cscript
Clear the conflicting Office 2016 product key from your system so your Microsoft 365 subscription can activate properly.
This issue typically occurs when a new computer has an embedded product key for an older Office version that conflicts with your new subscription. Using the Command Prompt with Cscript allows you to manually remove this hidden license.
Click the Windows Start menu, type 'cmd', right-click on the Command Prompt app, and select 'Run as administrator'.
Use the appropriate Cscript ospp.vbs command to display installed product keys and locate the last 5 characters of the embedded Office 2016 license.
Execute the unpkey command with the 5-character product key to remove the Office 2016 license from your computer's registry.
Restart your computer, open any Microsoft Office application, and sign in using the email address associated with your Microsoft 365 subscription.
Try WPS Office - No Complex Activation Required
Tired of dealing with confusing product keys, subscription conflicts, and activation failed errors? WPS Office is a completely free, lightweight alternative that lets you create and edit documents instantly without complicated licensing steps.
Frequently Asked Questions
Why is my Microsoft 365 showing as Office Professional Plus 2016?
This happens when your new computer comes with a pre-installed or embedded product key for Office 2016 in the system registry, which overrides your current Microsoft 365 subscription status.
Can I fix this by just reinstalling Microsoft 365?
Usually, a standard uninstall and reinstall will not resolve this issue because the embedded product key remains in the registry. You must manually remove the key using Cscript or a dedicated removal tool.
What if I accidentally remove the wrong license key?
If you remove your Microsoft 365 license key by mistake, you can easily restore it by opening any Office application and signing back in with your Microsoft account credentials to reactivate the software.
