Download Net Framework 35 Offline Installer For Windows 10 11 Free
You’ll see:
Enabling feature(s)...
The operation completed successfully.
Restart if prompted.
This is the classic GUI method, but it requires an internet connection. We include it here for completeness.
When to use this: If you have a fast, stable connection and no update issues.
When NOT to use this: If you are offline or behind a firewall.
If you do not have a Windows ISO file handy, you can download a standalone offline installer package. Microsoft does not host a standalone .exe installer for version 3.5 specifically for Windows 10/11 on their main download center (their web installer usually forces Windows Update).
However, reliable third-party repositories host the full framework packages, or you can use the full .NET Framework 3.5 Service Pack 1 installer, which functions as a full offline installer. You’ll see: Enabling feature(s)
Step 1: Download the Installer You can download the official Microsoft .NET Framework 3.5 Service Pack 1 (Full Package) from a trusted archive link or Microsoft's legacy catalog.
Step 2: Run the Installer
Troubleshooting Error 0x800F0906:
If you try to use the standard installer and receive an error code like 0x800F0906, it means Windows is struggling to find the source files offline. In this case, use Method 3 below, which uses a small utility to automate the offline installation process without needing a full Windows ISO.
The progress bar will go from 0% to 100%. Once finished, you will see:
"The operation completed successfully."
Result: .NET Framework 3.5 is permanently installed. No internet required. Restart if prompted
This method works 100% offline. You will need a Windows 10 or 11 ISO file (same version as your installed OS).
Run the DISM Command.
You need to tell Windows where to find the installation files. The specific file we need is usually located in the sources folder named sxs.
Type the following command into the Command Prompt window and press Enter:
DISM /Online /Enable-Feature /FeatureName:NetFx3 /All /LimitAccess /Source:<DRIVE_LETTER>:\sources\sxs
Replace <DRIVE_LETTER> with the drive letter of your USB/DVD.
Example: If your USB drive is drive D, the command would look like this: When to use this: If you have a
DISM /Online /Enable-Feature /FeatureName:NetFx3 /All /LimitAccess /Source:D:\sources\sxs
Wait for the Process to Complete. The progress bar will reach 100%. You should see the message: "The operation completed successfully."
Restart Your Computer. Restart your PC to finalize the changes.
When searching for "offline installers" on the internet, you will often find third-party websites offering .exe or .zip downloads. Be extremely cautious. Many of these are repackaged installers that may contain malware or bloatware.
The safest method is to use the official Windows ISO file (which contains the necessary files) or the Windows Command Prompt. The guide below uses the official Microsoft DISM tool built into Windows.