Paste the product key into the Activate dialog box. Alternative validation: Log into your Office Timeline account at and navigate to the Subscriptions tab to locate your key.Ĭopy your product key from your invoice or your account, taking care not to include extra spaces or characters. Open your Office Timeline invoice to ensure your license key is the correct one. In the What would you like to do dialogue, click on Activate. Open PowerPoint and navigate to the Office Timeline tab. Please make sure you have the latest version before following these steps. When product keys are generated, they are optimized for current versions of Office Timeline. You have an older version of Office Timeline installed but are trying to use a newer key. Whenever the license key is copied from the invoice, it copies a different character that looks just like '-'. You may also want to replace all the '-' keys between the characters manually with '-' from your keyboard. The Invalid Product Key message most often occurs for the following reasons:ĭuring copy and paste, an extra space or character is included. Product keys are uniquely created based on your license requirements.