Dot Net Framework 3.5 For Windows 8.1 64 Bit Offline Installer 〈Trusted Source〉
If you do not have Windows 8.1 media, you can download the directly from Microsoft’s official website.
Alternatively, in Command Prompt:
If you do not have Windows 8.1 media, you can download the directly from Microsoft’s official website.
Alternatively, in Command Prompt: