Configuring Fiddler to use company network's proxy?

Question

I'm trying to get Fiddler to work with my company's proxy. Every external request is returning 407.

So far I've tried adding oSession.oRequest["Proxy-Authorization"] = "YOURCREDENTIALS"; to the customized rules where I used my USERNAME:PASSWORD in base64. Still no luck.

Any ideas? Thanks.

Answer 1

What version of Fiddler are you using?

Fiddler will automatically chain to your organization's proxy, and all current versions of Fiddler support passing of authentication information between the client and the authenticating proxy.

How are you generating the HTTP requests in question? What are the exact HTTP response headers?