Wait for the installation to finish and restart your computer if prompted. Troubleshooting Common Offline Installer Errors Error Code: 0x800F0906, 0x800F081F, or 0x800F0922

Installing .NET Framework 3.5 offline on Windows 10 or 11 is a straightforward process once you have the right tools. For the most reliable, built-in method, use the with a Windows 10 or Windows 11 installation ISO as your source. This avoids internet dependency and bypasses most common installation errors, ensuring your older applications run smoothly on your modern PC.

After running your offline installer, confirm success:

By providing a comprehensive guide on downloading and installing the .NET Framework 3.5 offline installer, we hope to have helped you overcome the challenges associated with running older applications on Windows 10 and 11 systems.

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(for USB distribution to many PCs), consider these third-party safe repositories (only from trusted open-source communities):

In corporate environments, system administrators often set Group Policies that block optional feature installations.

While I cannot link to third-party hosts directly (always verify checksums), trusted open-source repositories on GitHub maintain a tool simply called

When you try to enable .NET Framework 3.5 through the standard "Windows Features" dialog on a PC connected to the internet, Windows will automatically download the necessary files from Windows Update. However, this method fails in several common scenarios, making an offline installation crucial:

If you continue to experience issues after trying the DISM method:

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While modern Windows versions prioritize the web-based installation, having the (or knowing how to use the DISM command with local source files) is essential for IT professionals and users with unstable connections.