Dism /online /enable-feature /featurename:NetFX3 /All /Source:D:\sources\sxs /LimitAccess Wait for completion
The remains a critical component for running thousands of legacy Windows applications, desktop games, and enterprise software utilities. While newer operating systems like Windows 10 and Windows 11 come pre-packaged with newer versions (like .NET 4.8 or .NET 6/7/8), they do not automatically enable or include the full installation files for version 3.5 (which includes .NET 2.0 and 3.0).
| File | Source | Size | |------|--------|------| | dotnetfx35.exe | Microsoft Download Center | ~231 MB | | Windows 10/11 ISO (optional) | Microsoft Media Creation Tool | ~5 GB |
If your offline installation fails, it is usually tied to conflicting system configurations or mismatched installation media versions. Error Code 0x800F0906 or 0x800F081F Error Code 0x800F0906 or 0x800F081F Always verify the
Always verify the digital signature of any third-party utility before executing it with administrative privileges. Avoid downloading .exe installers from unverified file-sharing forums, as they can bundle malware or adware. The command-line method outlined in Method 1 remains the safest alternative because it utilizes pure, unaltered Microsoft binaries. Troubleshooting Common Installation Failures
Verify that the folder path [YourDriveLetter]:\sources\sxs exists. This folder contains the raw .cab installation payload for .NET 3.5.
If you try to open an older application, Windows will often prompt you with an error stating: "An app on your PC needs the following Windows feature: .NET Framework 3.5 (includes .NET 2.0 and 3.0)." This is the safest
To install, simply on the .bat file and select "Run as administrator." The script will automatically use the source folder it resides in for the installation files.
Do not download random “.NET 3.5 installer” EXE files from third‑party websites – they may contain malware. Use Microsoft’s official sources (Windows media or the method below).
Microsoft provides a standalone, web-free deployment repository directly inside the official Windows installation media. This is the safest, most secure, and completely free offline installer available. Prerequisites unaltered Microsoft binaries.
Method 1: The Official Microsoft Dotnet Offline Installer (Recommended)
Windows cannot connect to the internet to download source files. Use to pull the files locally from a Windows ISO. 0x800F081F The source files could not be found in the specified path.