Resolving SQL Server 2012 Installation Error 0x84B40000

Encountering the error code 0x84B40000 during SQL Server 2012 installation can be resolved with a few strategic steps:

1. Verify system compatibility: Ensure your computer meets SQL Server 2012’s minimum specifications. This includes checking the OS, CPU, RAM, and available disk space.
2. Turn off antivirus software: Antivirus programs might disrupt the installation. Temporarily disabling your antivirus may help.
3. Execute setup as administrator: By right-clicking the setup executable and choosing 'Run as administrator,' you can avoid permission issues during installation.
4. Inspect your installation media: Ensure that your DVD or USB is not defective. Consider copying the setup files to another location and initiating installation from there.
5. Review installation logs: For more detailed error information, refer to the log files in %ProgramFiles%\Microsoft SQL ServerH\Setup Bootstrap\Log.
6. Remove earlier SQL Server versions: Uninstall any older SQL Server versions before proceeding with the new installation.
7. Update your operating system: Install the most recent service pack available for your operating system from Microsoft’s official site.