Successful troubleshooting relies on three main pillars: logical thinking, technical understanding, 
and experience with tools, and this series of articles on TCP/IP troubleshooting is firmly based on these pillars. For example, in my first article of this series, we outlined a structured approach that shows how to logically troubleshoot TCP/IP networking problems on Windows-based networks–logical thinking. Then in my second article we examined how routing tables work on Windows computers–technical understanding. In this article we’ll gain understanding of how the Repair feature works for repairing common problems with network connections–experience with tools. Future articles will continue to touch each of these three bases (logical thinking, technical understanding, and experience with tools) in turn so you can hone your skills as a troubleshooter.
The Repair feature is a powerful tool that is seldom used because it is not well understood. Accessing this feature is easy–just right-click on a network connection in your Networking Connections folder (or on a connection icon in your system notification area) and select Repair from the shortcut menu. When you do this, a dialog box opens and a series of messages appear showing the progress of the repair actions being taken. What happens under the hood here is that a series of command-line actions are being performed, and each progress message displayed indicates one of these actions has been performed. Let’s examine each of these steps that take place when you use Repair to understand what they do and why they are performed. TCP/IP Troubleshooting: A Structured Approach - Part 3: Repairing Network Connections
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