Windows 8 offline installation NET Framework 3.5

Operation steps

First find the Windows8 system image (should not be deleted).

Then select it right-click to open the way to select Windows Explorer will pop up a page. This is the inside of your Win8 image file we close it.

Then return to the main page of the computer and you will see that there is a DVD drive in the device with removable storage. That's right. Why is your Win8 image virtual drive? Because Win8 comes with a virtual CD-ROM program. The thing to do is to write down the drive letter of the Win8 image virtual drive because the next step will be used.

After doing the above, hold down Win+X on the keyboard and select Command Prompt (Administrator).

Then type dism.exe/online/enable-feature/featurename:NetFX3 /Source:H:sourcessxs(“H” is the drive letter of my virtual drive) in the command.