The server (www.fiddler2.com) presented a certificate that did not validate, dute to RemoteCertificateChainErrors

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Fiddler Classic Windows
Drazen
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Drazen asked on 01 Jun 2021, 12:43 PM

 

Hi,
we've encountered error in subject of this post continued by:

"0 - A certificate chain could not be built to a trusted root authority.

ISSUER: CN=GlobalSign RSA OV SSL CA 2018, O=GlobalSign nv-sa, C=BE

This warning can be disabled by clicking Tools -> Options."

This seems to be problem with local certificate store on client computer? Not neccessarily Fiddler issue.
Using Windows 7.
How do we proceed?

Nick Iliev
Telerik team
commented on 02 Jun 2021, 10:03 AM

It might be a problematic server-side certificate configuration or a missing certificate in the CA on the client-side. Fiddler has an "ignore server certificate errors" option which you could enable in Tools > Options. 
Drazen
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commented on 02 Jun 2021, 10:57 AM

its hard to blieve this could be due to server side certificate configuration since this is Fiddler official domain (www.fiddler2.com). how could I confirm its client side issue?
Nick Iliev
Telerik team
commented on 02 Jun 2021, 11:19 AM

The URL www.fiddler2.com should return 301 (Moved Permanently) status and redirect to https://www.telerik.com/fiddler - this is the expected behavior that I am experiencing when capturing the traffic with Fiddler Classic.

You could try to entirely reset the Fiddler certificates via Тools > Options > HTTPS > Actions > Reset All Certificates and retry the capture.

No answers yet. Maybe you can help?

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Fiddler Classic Windows
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