__link__ Download Net Framework 3.5 Windows 10 64 Bit Offline Installer

Once you have the offline installer, (USB drive, external HDD, or network share). Many users find themselves reinstalling .NET 3.5 after:

The most reliable way to install .NET 3.5 offline is by using the Deployment Image Servicing and Management (DISM) Microsoft Learn Mount the Windows 10 ISO or insert your installation USB drive. File Explorer and note the drive letter assigned to the installation media (e.g., Start menu , right-click on Command Prompt , and select Run as administrator Type the following command, replacing with your actual drive letter: Once you have the offline installer, (USB drive,

Microsoft sometimes hides the full offline installer. If you only see the small bootstrapper, use the following direct link (valid as of publishing): https://download.microsoft.com/download/2/0/E/20E90413-712F-438C-988E-FDAA79A8AC3D/dotnetfx35.exe If you only see the small bootstrapper, use

.NET Framework 3.5 Offline installer for Windows 10 - Microsoft Q&A The default method to enable

Historically, Microsoft offered a direct download for dotnetfx35.exe . As of recent updates, the recommended path is to use the Windows 10 Media Creation Tool to create an ISO or USB installation media. The \sources\sxs folder on that media contains the required microsoft-windows-netfx3-ondemand-package.cab file—the true offline source.

The default method to enable .NET Framework 3.5 in Windows 10 is via the “Turn Windows features on or off” control panel. However, this online method requires a stable internet connection, as Windows Update downloads the necessary files from Microsoft’s servers. This process can fail due to network policies, proxy restrictions, or corrupted update caches. More critically, users in environments with limited or no internet access—such as secure labs, remote sites, or during a fresh OS deployment—cannot rely on the online feature.