How to resolve the error code 0x800f081f: .NET Framework installation failure on Windows 8.1

Here are various methods you can use to address error code 0x800f081f when installing .NET Framework on Windows 8.1:

1. Update Windows: Ensure your Windows 8.1 is current with the latest updates. Navigate to Settings > Update & Security > Windows Update and select Check for updates.
2. Utilize the .NET Framework Repair Tool: Microsoft offers a .NET Framework Repair Tool to help resolve common installation issues. Download and execute the tool from the Microsoft website.
3. Manually install .NET Framework: If the previous steps are ineffective, try manually installing .NET Framework. Get the .NET Framework installer from the Microsoft website and run it as an administrator.
4. Turn off antivirus software: Occasionally, antivirus programs can disrupt the installation process. Temporarily disable your antivirus software and then proceed with the .NET Framework installation.
5. Perform a clean boot: A clean boot can help pinpoint and solve software conflicts that may be causing the installation problem. Follow the instructions in this Microsoft article to perform a clean boot.