Error when installing .net framework 3.5

You'll need your install media for this!

At an elevated command prompt, run the following command:
Dism /online /enable-feature /featurename:NetFx3 /All /Source:<drive>:\sources\sxs /LimitAccess

Note In this command, <drive> is a placeholder for the drive letter for the DVD drive or for the Windows 8 installation media or a shared folder containing the files.

For example, you run the following command:
Dism /online /enable-feature /featurename:NetFx3 /All /Source:D:\sources\sxs /LimitAccess

Quick VPN setup

Have you ever wanted to make it easy to copy or distribute VPN settings to users computers? Or even to make it easy to back up the settings?

How about a single file that contains all of your VPN's, can be copied to any windows PC, double-clicked and there are all your VPN's again?

Do this.
1, Right-click the desktop and select New/Text File.
2, Change the filename to VPNs.pbk and you are done!

Double-click the file and it should ask you to set up a VPN or dialup connection. You can add multiple connections to the same file and the properties button gives you access to the settings for the currently selected connection.