Seems some printer driver was conflicted with Fiddler.

[Hoho]

I installed Fiddler last Dec. and runs well in couple of days.But few days ago,Fiddler stop capturing any kind of request and block all the request.Recently,I installed a  printer driver of HP which I think might be the reason.Although I uninstall the driver and every software came with it,Fiddler still not working.BTW,Fiddler works well in save-mode with or without the printer dirver installed.Hope u can solve this for me.Thx.

The HP printer Driver package name:HP_Color_LaserJet_Pro_MFP_M176,was downloaded from the HP website.

[Hoho]

save-mode -> safe-mode(windows 7)