When using Fiddler to monitor HTTP Requests & Responses in Internet Explorer it ignores all traffic directed to http://localhost.
How to get Fiddler to stop ignoring traffic to localhost
fiddlerlocalhost
Related Solutions
I don't really understand your question. With IE, you have to go through special contortions to get http://localhost traffic to even go through Fiddler-- by default, WinINET applications (like IE) will not send localhost-traffic to proxies (like Fiddler).
Even if the traffic does go to Fiddler, Fiddler isn't going to "block" it unless you tell it to.
"Monitor all connections" has no impact here.
See this screenshot. Located at the top right part of the screen
Best Answer
To get Fiddler to capture traffic when you are debugging on local host, after you hit F5 to begin degugging change the address so that localhost has a "." after it.
For instance, you start debugging and the you have the following URL in the Address bar:
http://localhost:49573/Default.aspx
Change it to:
http://localhost.:49573/Default.aspx
Hit enter and Fidder will start picking up your traffic.