There are several reasons why you might get an error after entering a product key. Is your product key still not working? For example, the product key may have been mistyped or a product key for a different product might have been used. Letters and numbers may look the same. If you're having trouble reading the characters in your product key, here's an example of what the letters and numbers look like: Tip: If you bought Office from an online retailer and received a confirmation email, try copying and pasting the product key from this email instead of typing it. Reading the product key from a label can be difficult. Did you mistype the product key? Select how you got Office from the options below. Note that this product key won't match the product key shown in My Office Account.
Are you entering a product key for another Microsoft product? Unfortunately, there are many dishonest sellers who offer stolen, abused, or otherwise unauthorized Microsoft product keys for sale. Tip: You may have one certificate of authenticity for Windows and another for Office. . If you believe the product key has been lost, stolen, or misplaced and you simply would like to purchase a newer version of Office, you can go to to see your purchase options. If you purchased and downloaded Office from an online store, the product key should be in your email receipt.
I lost my product key Expand a section below to learn how to replace a lost Office 2010 product key. Most Microsoft products use a 25-character product key. The product keys they provide to students, teachers, and employees are known as volume license keys. Additional information and troubleshooting Expand a section below to find product key information for other versions, troubleshooting help, and other useful information. . . .
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