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This is the standard offline method that pulls required files directly from the Windows installation media. Microsoft Learn Mount the Installation Media If using an , right-click it and select If using a , insert it into your PC. Drive Letter assigned (e.g., Open Command Prompt as Administrator and select Command Prompt (Admin) Windows PowerShell (Admin) Run the Installation Command Type the following command, replacing with your actual media drive letter:
At 3:15 AM, Liam wrote his invoice: "Installed .NET Framework 3.5 (offline). System operational."
/LimitAccess : Prevents DISM from reaching out to Windows Update over the internet.
After installation, you can verify that .NET Framework 3.5 is installed correctly by:
The progress bar will count up to 100%. Once completed, you will see the message: "The operation completed successfully." Explaining the Command Parameters
/Source:X:\sources\sxs : Tells Windows to pull the installation files locally from your drive instead of downloading them online. /LimitAccess : Prevents DISM from contacting Windows Update.
Dism /online /enable-feature /featurename:NetFX3 /All /Source:D:\sources\sxs /LimitAccess Use code with caution. Command Parameter Breakdown:
/enable-feature /featurename:NetFX3 : Tells Windows to activate the .NET Framework 3.5 feature.
: You must run the commands in an elevated Command Prompt or PowerShell. How to Install .NET 3.5 Offline
This guide provides the exact steps, tools, and commands needed to install .NET Framework 3.5 offline on Windows 10 64-bit systems. Why You Need .NET Framework 3.5
If using an ISO file, right-click the file and select Mount . Note the drive letter assigned (e.g., Drive E: ). If using a USB drive, simply plug it in and note the drive letter.
Click the checkbox next to it to fill it. Leave the sub-checkboxes (HTTP Activation options) unchecked unless explicitly required by an advanced developer application. Click .