Have you ever failed to run or to install an app that require .NET Framework 3.5 so you asked yourself How can I enable .NET Framework 3.5 without Internet?
.NET Framework is a development language that supports both running and building some Windows apps and web services, such as ASP.NET, ADO.NET, VB.NET, and VC++.NET.
Unfortunately, .NET Framework 3.5 (includes .NET 2.0 and 3.0) doesn’t included in any windows versions. So, you have to install it manually if you have an app required .NET Framework 3.5.
.NET Framework 4.8 is the most recent version of .NET Framework till the day of this post. Microsoft state that “.NET Framework will continue to be included with Windows, with no plans to remove it. You don’t need to migrate your .NET Framework apps, but for new development, use .NET 5 or later”.
So, if you are trying to open an app in windows 11 that require .NET framework 3.5 such as DirectPlay, Visual Studio or whatever, you will see an error message saying that:
An app in your PC needs the following Windows feature:
.NET framework 3.5 (includes .NET 2.0 and 3.0)
On this topic, I will show you an exclusive method in how to install .NET framework 3.5 offline installer in windows 11 using Command line from CMD.
Both One-click and manual methods should be worked in any computer unless you have corrupted system files. In this case, you have to try the next suggestions to repair your windows before retrying.
How long does NET framework 3.5 take to install using offline installer?
In my case, it takes about 3 minutes, but in a Virtual Machine with limited hardware resources, it takes 8 minutes. So, the time required to install .NET framework 3.5 may take shorter or longer time depending on your laptop features (i.e., CPU speed, RAM size, Power Safer Mode, … etc.).
3. How to install .NET Framework 3.5 from WIM like DVD or USB drive?
If you have a Windows Installation Media (WIM), you can install .NET Framework 3.5 offline without internet. This method can work in all windows editions such as, windows 11, windows 10, windows 8, windows 8, windows 7, windows Vista, Windows XP, windows Server, …etc. The edition of installed windows in your computer should be the same edition and windows in the WIM.
To install .NET Framework 3.5 from WIM like DVD or USB, do the followings:
Connect the USB or DVD disk the contains windows to your computer
Determine the letter assigned to the connected disk to add it to the to the command line on the next step
Run CMD or Windows PowerShell as administrator and execute the following command to install .NET Framework 3.5 (includes .NET 2.0 and 3.0) offline from DVD or USB:
Replace the F with the letter of connected DVD or USB drive.
4. Alternative suggestions:
First suggestion: Try to repair and replace missing or corrupted system files using DISM & SFC tools:
Execute the following 2 commands one by one to, check and fix any corruption in your system:
DISM.EXE /ONLINE /CLEANUP-IMAGE /RESTOREHEALTH
If there are any missing or corrupted files, DISM and SFC tools will replace them automatically, and you may be asked to restart your computer. So, if you asked to do so, restart your computer and then try again to install to install NET framework 3.5 on windows 10 offline mode using CMD.
Now, run Installer.cmd as admin or execute the next command again to enable dot NET framework 3.2 (includes .NET 2.0 and 3.0):