How to Fix Error Code 25004: Product Key Incompatibility

To address error code 25004, follow these steps:

1. Verify that the product key matches the version and edition of Microsoft Office you're attempting to install. Ensure the key is appropriate for your specific Office version.
2. Remove any existing versions of Microsoft Office that might be causing conflicts. Use the Microsoft Office Removal Tool to ensure a clean removal of previous installations.
3. Temporarily disable any antivirus or firewall software during installation. These security programs can sometimes obstruct the installation and lead to errors.
4. Consider activating your product key online rather than via phone. Online activation may resolve some issues related to activation.