Troubleshooting Access Denied Error 0x80070005 in Office 2021 Setup

There are several possible solutions to the error code 0x80070005 during Office 2021 installation:

1. Run the installer as an administrator: Right-click on the installer file and select 'Run as administrator' to give it elevated privileges.
2. Disable antivirus software: Sometimes, antivirus software can interfere with the installation process. Try disabling your antivirus software temporarily and then run the installer again.
3. Check permissions: Make sure that you have the necessary permissions to install software on your computer. Check the user account settings and make sure that you have administrative privileges.
4. Clean boot: Try performing a clean boot of your computer to eliminate any conflicts with other software or services that may be interfering with the installation process.
5. Use the Microsoft Office Installation Troubleshooter: Microsoft provides a troubleshooter tool that can help diagnose and fix installation issues. Download and run the tool to see if it can resolve the error code 0x80070005.
6. Repair or reinstall Windows: If none of the above solutions work, you may need to repair or reinstall Windows to fix any underlying issues that may be causing the installation error.