The free web debugging proxy for any browser, system or platform.
When Fiddler is in capture mode all web pages get attached Certificate Error
This occurs also occurs on Fiddler Menu: Tools/Send Feedback
Reset IE options.
Fiddler Version (v184.108.40.206081)
This simply indicates Fiddler's cert isn't trusted. Tools > Fiddler Options > HTTPS > Actions > "Trust Root Certificate", or, in a pinch "Reset all certificates"
Uninstalled Fiddler via ControlPanel and reinstalled Fiddler
You won't be notified about changes to this idea.