How to Enable or Install Microsoft .NET Framework 3.5 on Windows 10, Windows 8.1, Windows 8 or Windows 7

Summary

• Method 1: To enable the Microsoft .NET Framework 3.5 online with internet connection

• Method 2: To install the Microsoft .NET Framework 3.5 offline without internet connection

Step-by-step Guide:

• Method 1: To Enable the Microsoft .NET Framework 3.5 with internet connection:

Step 1: Press the Windows  key, type Windows Features and press Enter. The Turn Windows features on or off window will be shown:

Figure 1: Turn Windows Features On or Off Window

Step 2: Look for the '.NET Framework 3.5 (includes .NET 2.0 and 3.0' folder. Check all the relevant checkboxes (including the expandable folders), select OK and reboot the Server PC if prompted.

Step3: The Server PC will being the activation / installation of Microsoft .NET Framework 3.5.

• Method 2: To Install the Microsoft .NET Framework 3.5 offline without internet connection: 

Step 1: Go to .NET Framework 3.5 Service Pack 1 (Bootstrapper) and click Download to download the setup file.

Figure 2: Downloading the Setup File from the Link

Step 2: Locate the downloaded setup file and transfer the file to a USB drive to install the setup file on the Server PC which does not have internet connection.

Step 3: At the Server PC, run the donnetfx35 setup.exe on your USB drive. Follow the installation wizard to complete the installation.

Figure 3: Run the Setup File to Begin the Installation

Step 4: Restart your PC after completing the installation if prompted to do so.