How to solve the error code 0x80070057: Invalid parameter during Office 2021 installation

There are several possible solutions to the error code 0x80070057 during Office 2021 installation:

1. Check system requirements: Make sure your computer meets the minimum system requirements for Office 2021. Check the processor, RAM, and hard disk space requirements.
2. Disable antivirus software: Antivirus software can sometimes interfere with the installation process. Disable your antivirus software temporarily and try installing Office 2021 again.
3. Run the installation as an administrator: Right-click on the Office 2021 installation file and select "Run as administrator." This will give the installation process the necessary permissions to complete successfully.
4. Use the Office Installation Troubleshooter: Microsoft provides a tool called the Office Installation Troubleshooter that can help diagnose and fix installation issues. Download and run the tool to see if it can resolve the error code 0x80070057.
5. Repair the Windows Registry: The error code 0x80070057 can sometimes be caused by registry errors. Use a registry cleaner tool to scan and repair any errors in the Windows Registry.