How to resolve the error code 0x84B40002: SQL Server 2014 installation failed

There are various potential solutions for this error code:

1. Verify system requirements: Confirm that your system fulfills the minimum specifications for SQL Server 2014 installation. This involves the operating system, processor, memory, and disk space.
2. Temporarily disable antivirus software: Antivirus programs can disrupt the installation process. Turn off your antivirus software momentarily and retry the installation.
3. Install with administrative privileges: Right-click on the installation file and choose 'Run as administrator' to make sure you have the required permissions to install SQL Server.
4. Update Windows: Make sure your system has the most recent Windows updates. This can assist in solving any compatibility problems with SQL Server.
5. Remove older SQL Server versions: If you have any earlier versions of SQL Server installed, remove them before trying to install SQL Server 2014.
6. Utilize the SQL Server Installation Center: Employ the SQL Server Installation Center to set up SQL Server 2014. This utility can aid in identifying and solving any installation issues.
7. Examine installation logs: Check the installation logs to pinpoint any particular errors or issues that might be causing the installation to fail. This can help you troubleshoot and fix the problem.