Problem: Specific Traffic is Missing
Updated on Nov 6, 2025
I see some traffic in the Web Sessions List, but some traffic (for example, from a specific program) seems to be missing.
Solution: Check for Traffic Filters
Check to see if any Traffic Filters are enabled.
- Check in the status bar

- Check the Process Filter in the toolbar.

- Check the Filters tab.

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If you've written or set any Fiddler Classic Rules check those too.
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Click Help > Troubleshoot Filters.... When you do so, traffic that would otherwise be hidden is instead shown in a strikethrough font. The Comments column will show which of Fiddler's filters was responsible for attempting to hide the traffic.