Resolving Installation Failure: SQL Server 2016 Error Code 0x80070643

To rectify the installation error 0x80070643 with SQL Server 2016, consider these tailored steps:

1. Assess system suitability: Ensure your computer meets the essential requirements for a smooth SQL Server 2016 setup. Evaluate specifics like OS version, CPU capabilities, memory adequacy, and necessary disk space.
2. Pause antivirus interference: Temporarily disabling your antivirus may resolve conflicts during the installation process. Deactivate your security software briefly and attempt to reinstall SQL Server 2016.
3. Elevate installation privileges: Enhance permission levels by selecting 'Run as administrator' when launching the SQL Server 2016 installer. This action helps avoid permissions-based installation failures.
4. Update your system: Regular system updates can prevent installation issues. Access Settings > Update & Security > Windows Update to ensure all recent updates are applied.
5. Clear previous SQL Server installations: To prevent software conflict, uninstall any previous SQL Server versions before starting a new installation.
6. Engage SQL Server Installation Centre: For a streamlined installation, use the SQL Server Installation Centre which provides step-by-step guidance and reduces the likelihood of errors.
7. Analyse installation logs: If problems persist, consult the installation logs for detailed error information. These logs can be accessed in the %ProgramFiles%\Microsoft SQL ServerX\Setup Bootstrap\Log folder.