Steps to Resolve Error 0x80070643 During SQL Server 2019 Setup

Here's how to troubleshoot the installation error 0x80070643 for SQL Server 2019:

1. Verify system compatibility: Confirm that your computer aligns with the SQL Server 2019's necessary system prerequisites, such as OS version, CPU, RAM, and available storage.
2. Temporarily turn off antivirus: Antivirus programs may disrupt the installation. Temporarily disable your antivirus and attempt the installation of SQL Server 2019 once more.
3. Execute setup with administrative privileges: Right-click the installation file of SQL Server 2019 and choose 'Run as administrator' to ensure sufficient permissions for a successful install.
4. Update your Windows: Ensure your system is fully updated by navigating to Settings > Update & Security > Windows Update and applying any pending updates.
5. Remove prior SQL Server versions: Before installing SQL Server 2019, make sure to uninstall any older versions of SQL Server that might be present.
6. Utilize SQL Server Installation Center: Employ the SQL Server Installation Center for installing SQL Server 2019, which helps streamline the process and reduces the likelihood of errors.
7. Review installation logs: If the installation does not succeed, consult the installation logs for detailed error information. These logs can be accessed in the %ProgramFiles%\Microsoft SQL Serverh\Setup Bootstrap\Log directory.