How to resolve the error code 0x800F0906: .NET Framework 3.5 installation issue

There are various methods to address the error code 0x800F0906 encountered during the installation of .NET Framework 3.5. Below are some potential fixes:

1. Employ the DISM command: Launch Command Prompt with administrative privileges and enter the following command: DISM /Online /Enable-Feature /FeatureName:NetFx3 /All /LimitAccess /Source:D:\sources\sxs (substitute D:\ with the letter of your Windows installation media drive). This command will activate the .NET Framework 3.5 feature and utilize the installation media as the source.
2. Utilize the Windows Update Troubleshooter: Navigate to Settings > Update & Security > Troubleshoot > Additional troubleshooters > Windows Update > Run the troubleshooter. This will identify and correct any issues with Windows Update that might be hindering the installation of .NET Framework 3.5.
3. Install .NET Framework 3.5 via Programs and Features: Open Control Panel > Programs and Features > Turn Windows features on or off > Check the box beside .NET Framework 3.5 (includes .NET 2.0 and 3.0) > Click OK. This will install .NET Framework 3.5 from the Windows installation files.
4. Use the .NET Framework Repair Tool: Download and execute the .NET Framework Repair Tool from Microsoft's website. This tool can identify and rectify issues with .NET Framework installations.
5. Examine antivirus or firewall software: Some antivirus or firewall programs might block the installation of .NET Framework 3.5. Try disabling or temporarily uninstalling such software and then attempt the installation of .NET Framework 3.5 again.
6. Perform a clean boot: A clean boot can help identify and resolve software conflicts that may be obstructing the installation of .NET Framework 3.5.