Press Enter. The progress bar will reach 100%, and .NET 3.5 will be fully enabled. Method 2: Manual Download from Microsoft
This guide provides a comprehensive overview of how to download and install .NET Framework 3.5 offline on Windows 10 (64-bit). Why You Need the Offline Installer
If you can briefly connect to the internet, you can use these official Microsoft links to get the installer package:
The .NET Framework 3.5 remains a bridge between modern Windows 10 operating systems and the legacy software that many users still depend on. While Windows Update provides a streamlined method for enabling this feature, it is prone to connectivity and server-side errors. The offline installer—whether utilized through the full .NET 3.5 full installer package or the DISM command via Windows media—serves as the definitive solution for stability and reliability. For power users and IT administrators managing Windows 10 64-bit systems, mastering the offline installation of .NET 3.5 is an essential skill that ensures software continuity and minimizes downtime. Press Enter
To install .NET Framework 3.5 on Windows 10 (64-bit) without an internet connection, you cannot simply use the standard standalone .exe installer, as it often still triggers a download from Windows Update. Instead, the supported offline method requires using the (ISO or USB). Recommended Offline Installation Method
DISM /Online /Enable-Feature /FeatureName:NetFx3 /All /LimitAccess /Source:D:\sources\sxs
Run Command Prompt or PowerShell .
Restart your computer to clear pending installations. Temporarily disable your antivirus software and ensure that the Windows Update Service is enabled in services.msc before running the DISM command again. Verifying the Installation
Download a trusted utility from community repositories like SourceForge or GitHub. Launch the application as an Administrator.
Insert your Windows 10 installation USB or mount the ISO file. Why You Need the Offline Installer If you
Ideal for IT administrators deploying software to multiple machines. Option 1: Official Microsoft Method (Using DISM)
Ensure the CMD or installer is always launched with Administrator privileges.