Once the download is complete:
To perform an offline installation, you need one of the following: Windows 10 ISO file: Downloadable via the Microsoft Media Creation Tool Physical Media: A Windows 10 installation DVD or bootable USB drive. Microsoft Learn Step-by-Step Offline Installation Guide 1. Mount the Installation Media Insert your USB/DVD or right-click your ISO file and select . Open "This PC" in File Explorer and note the drive letter assigned to it (e.g., Microsoft Learn 2. Open Command Prompt as Administrator
Microsoft does not provide a simple dotnetfx35.exe setup file for Windows 10. Instead, the official "offline installer" is actually the (ISO file) combined with a DISM command. net framework 3.5 download for windows 10 offline installer
The enables developers, IT administrators, and enterprise users to install Microsoft’s legacy .NET runtime environment on Windows 10 without requiring an active internet connection. This feature is critical for running older applications that depend on .NET 2.0, 3.0, or 3.5, while providing full control over deployment in air-gapped or restricted networks.
Online installation failed, or the offline source is corrupted. Fix: Disable Windows Update temporarily, then retry the DISM command. Also, run sfc /scannow to repair system files before retrying. Once the download is complete: To perform an
To install .NET Framework 3.5 offline on Windows 10, the most reliable method is using the tool along with Windows 10 installation media (ISO or USB) . This method works without an internet connection because it uses files already present on the installation media. Official DISM Offline Method
Starting with Windows 10, the only fully supported way to install .NET Framework 3.5 offline is by using the found on the Windows 10 installation media. 1. Prepare Your Media Open "This PC" in File Explorer and note
Type or paste the following command, replacing D: with your actual mounted drive letter: DISM /Online /Enable-Feature /FeatureName:NetFx3 /All /LimitAccess /Source:D:\sources\sxs
This process uses the original source files (specifically the sxs folder) to enable the feature.