To install .NET Framework 3.5 on Windows 10 (64-bit) without an active internet connection, you can use the official Microsoft .NET Framework 3.5 SP1 Full Package or perform a manual installation using local Windows media. Johnson Controls Method 1: Using the Offline Installer
To create a reliable offline installer, you need the (same edition and version as your target system). Proceed as follows: To install
Once it reaches 100% and says "The operation completed successfully," close the Command Prompt and restart your computer Microsoft Learn Step 3: Verify the Installation Windows Key + R optionalfeatures , and press In the "Windows Features" box, verify that .NET Framework 3.5 (includes .NET 2.0 and 3.0) is checked. Microsoft Learn Important Considerations Version Match Open Windows Features : Press the Windows key
To install .NET 3.5 offline on a 64-bit Windows 10 system, follow these steps: While Microsoft provides a "Full Package" offline installer,
While Microsoft provides a "Full Package" offline installer, it is primarily designed for older OS versions like Windows XP or Vista and may still trigger a download request on Windows 10. learn.microsoft.com Official Link : You can find the Microsoft .NET Framework 3.5 Service Pack 1 (Full Package) Official Microsoft Download Center Important Note
A Windows 10 64-bit installation USB or ISO file (the same version as your PC).