I use the awesome Fiddler2 to debug HTTP, and I needed to compare sessions. Fiddler has a support for this, but when I clicked Tools – Compare Sessions, it prompted me to install Windiff.exe.
- Open Registry, go to:
- Add a new String Value called CompareTool and set the value to the path of your favorite Diff tool:
"C:\Program Files (x86)\Beyond Compare 3\BCompare.exe"
- Restart Fiddler