官方版
Capture Traffic from a Different Account
To capture traffic from accounts other than the current user (for example, ASP.NET on IIS or a Windows Service), configure that process to use the Fiddler proxy.
For Example
Configure .NET Applications
Configure WinHTTP Applications
谷歌翻译版
从其他账户捕获流量
若要从当前用户以外的帐户(例如IIS上的ASP.NET或Windows Service)捕获流量,请将该进程配置为使用Fiddler代理。