How to re-enable a disabled network connection in Windows XP using C++?

Question

I found this article at SO that tells how to enable/disable a network adpter using the SetupAPI. This works fine so far. The problem is that I could not find a way to get the device index for network connections (adapters) that have been disabled in Windows XP .

I have:

• The list of GUIDs (from HKLM\\SOFTWARE\\Microsoft\\Windows NT\\Netcards)
• Everything from Win32_NetworkAadapter that is supported in Windows XP

I tried without success:

• GetIfTable() - disabled adapters are not present in the table
• Win32_NetworkAdapter::InterfaceIndex is not supported in XP
• Win32_NetworkAdapter::Enable()/Disable() is not supported in XP

What else can I do to obtain the device index or to get a disabled network adapter re-eabled again?

Answer 1

Based on my experience building my Network Connection Guard tool the easiest way to do this is with the netsh command, not APIs. My example is C# so I used System.Diagnostics.Process but in your case I believe you could use ShellExecute() .

Also see this answer on SO Programmatically disable/enable network interface