Don't have Telegram yet? Try it now!
https://www.ratatouille90.com/2013/11/windows-8-enable-net-framework-3-5-includes-net-2-0-and-3-0-i-e-netfx3-feature-in-online-offline-mode/
Windows 8: Enable .NET Framework 3.5 (includes .NET 2.0 and 3.0) feature in Online & Offline mode!