Resolving SQL Server 2017 Installation Error 0x800F081F

Here are several effective methods to troubleshoot this error code:

1. Enable .NET Framework 3.5: This issue might arise if .NET Framework 3.5 isn't active on your machine. Activate it via Control Panel > Programs and Features > Turn Windows features on or off > .NET Framework 3.5 (includes .NET 2.0 and 3.0).
2. Temporarily turn off antivirus: At times, antivirus programs may disrupt the installation. Deactivate your antivirus temporarily and attempt to install SQL Server 2017 once more.
3. Opt for installation media: Should you face issues with a downloaded installation file for SQL Server 2017, consider using physical installation media instead to mitigate file corruption problems.
4. Verify system compatibility: Ensure your computer fulfills the minimal requirements for SQL Server 2017 available on the Microsoft official site.
5. Install with administrative privileges: To prevent issues related to permissions, right-click the installation file and choose 'Run as administrator'.
6. Review the installation log: The installation log might offer clues about the error. Locate it in the %ProgramFiles%\Microsoft SQL Server`\Setup Bootstrap\Log folder and address any errors or warnings identified.