Software⏱️ 3 min read📅 2026-06-11

How to Fix 0x800F0906 Error – Error 0x800F0906 while installing .Net 3.5 on Windows 8

Error 0x800F0906 while installing .Net 3.5 on Windows 8

Quick Answer: Try uninstalling and reinstalling the .NET Framework, or use a third-party installer like Web Installers.

📋 Table of Contents

  1. 🛑 Root Causes of the Error
  2. 🔧 Proven Troubleshooting Steps
  3. 💡 Conclusion

Error 0x800F0906 occurs when trying to install .NET 3.5 on Windows 8, which is frustrating because it prevents developers from building applications for older versions of .NET. This error affects users who need to use both the new and old versions of .NET frameworks in their development process.

Installing .NET 3.5 on Windows 8 can be challenging due to its compatibility issues with the newer framework, making it difficult for developers to switch between different .NET versions.

🛑 Root Causes of the Error

  • The primary reason for this error is that Windows 8 comes with .NET 4.5 as a standard framework, which often conflicts with the .NET 3.5 framework installed through the Windows Features or Visual Studio installer. This conflict can cause issues during the installation process.
  • Another possible reason is that there are issues with the .NET Framework installation package itself, which may be corrupted or missing certain files required for the installation.

🔧 Proven Troubleshooting Steps

Manually installing .NET 3.5 using the Windows Features

  1. Step 1: Open the Control Panel and navigate to the 'Programs and Features' section.
  2. Step 2: Click on 'Turn Windows features on or off' and then scroll down to find '.NET Framework 3.5 (Individual)' and check the box next to it.
  3. Step 3: Restart your computer and wait for the installation to complete.
  4. Step 4: Check if the .NET 3.5 framework is installed by going to 'Control Panel' > 'Programs and Features' > 'Turn Windows features on or off'.
  5. Step 5: Alternatively, you can also use the Visual Studio installer to install .NET 3.5.
  6. Step 6: method_2_name

Alternative Advanced Fix

  1. Step 1: Open the Visual Studio installer and select the 'Individual components' option.
  2. Step 2: Check the box next to '.NET Framework 3.5 (Individual)' and click 'Modify'.
  3. Step 3: Wait for the installation to complete and check if the .NET 3.5 framework is installed.
  4. Step 4: If you encounter any issues during installation, try restarting your computer and then attempting the installation again.

💡 Conclusion

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