Resolving SQL Server 2012 Setup Failure Error Code 0x84B40002

Multiple approaches can address the SQL Server 2012 installation error code 0x84B40002:

1. Verify system compatibility: Ensure your system aligns with the SQL Server 2012's minimum specifications. Verify the necessary hardware and software prerequisites, such as the OS version, CPU, RAM, and available disk space.
2. Turn off antivirus programs: Antivirus programs might disrupt the setup process. Temporarily disable your antivirus software before proceeding with the SQL Server 2012 installation.
3. Execute setup with admin rights: To guarantee sufficient permissions for installation, right-click the setup executable and choose 'Run as administrator.'
4. Inspect installation media: If installing from physical media like a DVD or USB, ensure it isn't damaged. Alternatively, relocate the setup files to another directory and retry the installation.
5. Review installation logs: For further insights into the error, consult the installation log files located in the %ProgramFiles%\Microsoft SQL ServerH\Setup Bootstrap\Log directory.
6. Remove prior SQL Server installations: Uninstall any existing SQL Server versions before initiating the installation of SQL Server 2012.
7. Update your system: Confirm that your system is updated with the latest patches and service packs. Install any outstanding updates prior to installing SQL Server 2012.