Dear Ms. Judy,
Thank you for contacting Microsoft Q&A Support.
Following our review of your inquiry, we kindly request some additional information to assist you more effectively:
- Could you please confirm the specific version of Microsoft Office to which you are referring?
- When you mention an "access code," are you referring to the 25-character product key typically required for Office activation?
Please note that if your product is Microsoft 365, it is a subscription-based service. In this case, the license is associated with your Microsoft account, and activation is completed by signing in with the registered email address.
For perpetual license versions such as Office Professional Plus 2016, 2019, or 2021, a product key is generally required during installation. As you indicated that the product was purchased from Costco, we recommend checking your email inbox for a message from Costco, which may include the product key and installation instructions.
We appreciate your cooperation and look forward to your response so we may continue assisting you.
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