.NET Framework 3.5 missing? Enable it
Now to enable it, you have to move to Windows Feature. This can be accessed via Control Panel > Programs and Features.
If you don’t have a strong internet connection on your system, the download of required files may take a bit long time, and thus the overall process becomes lengthy. If you try to download the full setup of .NET, it is 291 MB in size, and you will obviously need a fast connection to do it quickly.
Install .NET Framework 3.5.1 on Windows 10
Open the .iso file of Windows OS with a compression/decompression software like 7-Zip. Open the Sources folder and find sxs folder. Now copy this folder to the following location: C:\Temp
Next, run the Command Prompt as administrator, and type the following command:
That’s it! Now reboot and check the Windows Feature window again. You’ll see the first option is automatically checked. You will now also be able to run software or app which requires .NET (like AutoCAD. etc.), without any problems.