Making fiddler work with chrome

Question

I want to use fiddler to monitor api calls made by my browser when it visits some pages.

The technology - Fiddler 4.6x, Chrome 56, Firefox 51, Windo

Answer 1

Firefox has its own certificate store so I assume you just installed the DO_NOT_TRUST... Fiddler root cert there and everything worked. Pretty much you should do the same with Windows certificate store in order for Chrome to work. So make sure you remove all the fiddler certificates you previously generated and regenerate.

Answer 2

I was facing similar issue with Fiddler v4.6 and followed these steps:

Fiddler 4.6.1.5+

• Click Tools > Fiddler Options.
• Click the HTTPS tab.
• Ensure that the text says Certificates generated by CertEnroll engine.
• Click Actions > Reset Certificates. This may take a minute.
• Accept all prompts

Fiddler 4.6.1.4 and earlier

• Click Tools > Fiddler Options.
• Click the HTTPS tab
• Uncheck the Decrypt HTTPS traffic checkbox
• Click the Remove Interception Certificates button. This may take a minute.
• Accept all of the prompts that appear (e.g. Do you want to delete these certificates, etc)
• (Optional) Click the Fiddler.DefaultCertificateProvider link and verify that the dropdown is set to CertEnroll
• Exit and restart Fiddler
• Click Tools > Fiddler Options.
• Click the HTTPS tab
• Re-check the Decrypt HTTPS traffic checkbox
• Accept all of the prompts that appear (e.g. Do you want to trust this root certificate)

Reference: https://textslashplain.com/2015/10/30/reset-fiddlers-https-certificates/

Answer 3

I used these two stack overflow posts -

https://superuser.com/questions/145394/windows-7-will-not-install-a-root-certificate

https://superuser.com/questions/647036/view-install-certificates-for-local-machine-store-on-windows-7

I don't know what is happening. One of these posts worked and I got the fiddler cert into the trusted store. But, fiddler still cannot decrypt many websites https traffic, especially that of google.

Answer 4

After I reinstalled fiddler and did what Abir suggested Fiddler still didn't capture any traffic.

In my case it stopped working because I installed a chrome extension named Tunnel Bear, uninstalling the extension solved it for me.