You must be wondering how to get Fiddler working with new Windows 8 Metro-style applications. These applications work somewhat differently than classic desktop applications, and require a bit of special configuration work to get Fiddler to work properly.
Windows 8 and Fiddler get along just fine after a few tweaks. Many users have been using Fiddler to debug Metro-style applications over the last few months.
There are three important Windows 8 changes that impact Fiddler:
- The .NET CLR 2.0 isn’t installed by default
- Metro-style applications require a specific Capability to communicate with the localhost (where Fiddler runs)
- Metro-style applications do not respect the per-User Trusted Root Certificates store
Each of these three issues can be worked around to restore the full functionality of Fiddler when running on Windows 8.
Read more at MSDN
- Fiddler Web Debugger > Fiddler and Windows 8 Metro-style applications
- Fiddler Web Debugger > Revisiting Fiddler and Windows 8 Metro-style