by Scott
18. April 2010 16:41
I attempted today to use Fiddler with firefox to debug my asp.net web site on my local developer machine. I was greeted with:
[Fiddler] Connection to localhost failed.
Exception Text: No connection could be made because the target machine actively refused it ::1:11973
After messing with many of Fiddler's options, I found that by unchecking the "Enable IPv6 (if available)" option, traffic was once again flowing through Fiddler. I am running Windows 7 64 bit with Visual Studio 2010.

Hope this helps somebody,
Scott