Fix Excel LTSC 2021 Invalid Product Key Error in Deployment Tool
Question details
Users encounter an invalid product key error when attempting to download and activate Excel LTSC 2021 using the Office Deployment Tool.
- Product
- Excel LTSC 2021
- Device & OS
- not provided
- Scenario
- Deploying and activating Excel LTSC 2021 for enterprise or personal use.
- Observed behavior
- The installation fails or displays an invalid product key prompt because the deployment configuration uses the wrong product ID or license parameters.
Verify whether you purchased a retail or volume license for Excel LTSC 2021, as retail licenses can typically be installed directly without utilizing the Office Deployment Tool.
Configure the Office Deployment Tool for Volume Licensing
Update your XML configuration file with the correct Product ID to ensure successful volume activation.
When installing volume-licensed versions of Excel LTSC 2021, the Office Deployment Tool (ODT) requires a specific configuration file. Using a retail Product ID with a volume license key will trigger an invalid product key error.
Navigate to the Microsoft Download Center and download the most recent version of the Office Deployment Tool.
Extract the ODT files and open the configuration.xml file using a standard text editor such as Notepad.
Locate the Product ID attribute in the XML file and change it to the exact identifier for your volume version, such as 'Excel2021Volume'.
If you are using a MAK (Multiple Activation Key), ensure it is correctly entered within the PIDKEY attribute in the configuration file.
Save your changes to the XML file, open Command Prompt as an administrator, and run the ODT setup command referencing your updated configuration.
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Frequently Asked Questions
Why does the Office Deployment Tool say my Excel 2021 product key is invalid?
This typically occurs if the XML configuration file uses a retail Product ID alongside a volume license key, or if the product key is mistyped. Ensure you use 'Excel2021Volume' for volume licenses.
Do I need the Office Deployment Tool for a retail copy of Excel LTSC 2021?
No, retail licenses do not require the Office Deployment Tool. You can install retail copies directly by signing into your Microsoft account and downloading the installer.
Where can I find the correct Product IDs for Office LTSC 2021?
A comprehensive list of supported Product IDs and Office Deployment Tool configuration options can be found in the official Microsoft documentation designed for IT administrators.
