Office product key errors ERR_MISSING_PARTNUMBER or ERR_INVALID_TOKEN

When you enter a product key on Office.com/setup, you might see one of the following error messages:

  • "Sorry, we can't set up your account right now. Hang on to your product key, and try again later. If this happens again, contact support." [Error code: ERR_MISSING_PARTNUMBER]

  • "Sorry, we can't find this product key in our database." [Error code: ERR_INVALID_TOKEN]

These messages appear if you enter a product key for an older version of Office that isn't available for download from Office.com/setup. Here's where you can enter those product keys.

If your product key doesn't work on these sites, it might be a volume license key. Volume license keys are typically used by organizations to activate volume editions of Office Professional Plus. If you have a volume license key, please contact your administrator for help with installing Office or see Activate volume editions of Office to activate Office Professional Plus using a product key.

Still need help? Contact Support

If you’ve followed the guidance in this article and still need help, visit our Microsoft support page for assistance.

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