Resolving SQL Server 2012 Setup Error 0x84B50000

Several strategies exist to address the error code 0x84B50000 during the SQL Server 2012 installation:

1. Verify system compatibility: Ensure your computer meets SQL Server 2012's minimum system requirements. This includes checking the OS version, CPU, RAM, and available disk space.
2. Turn off antivirus programs: Antivirus software might block the installation of SQL Server 2012. Temporarily disable your antivirus programs before proceeding.
3. Initiate setup with admin privileges: To ensure full access rights, right-click the installation file and choose 'Run as administrator.'
4. Update Windows: Ensure your system is up to date with the latest Windows patches. Apply any outstanding updates before attempting another installation.
5. Conduct a clean boot: To avoid software conflicts, perform a clean boot using the System Configuration tool, enabling only 'Load system services' under the 'Selective startup' setting.
6. Repair .NET Framework: SQL Server 2012 requires at least .NET Framework 3.5 SP1. If the error persists, attempt to repair the .NET Framework.
7. Remove previous SQL Server installations: Uninstall any former SQL Server versions prior to installing SQL Server 2012.
8. Examine installation logs: Review the installation logs for any specific errors or warnings that might explain the installation issues. These logs are located in the %ProgramFiles%\Microsoft SQL ServerH\Setup Bootstrap\Log directory.