Fiddler works well with many apps on my PC except one that gives me the following message (image attached).
I tried fixiing the errors by clearing and re-installing certificates many times. It doesn't seem to work. If I click yes to the pop-up (in the image I attached), the app internet functionnalities stop working.
Did any of you had something similar? How could I fix this?
1 Answer, 1 is accepted
Hi Frédéric,
This is likely because the remote host server doesn't trust the Fiddler Root Certificate and they are using a form of Certificate Pinning. In this case, the remote host will not allow decrypting the traffic. Unfortunately, this is a security measure by the owner of the application and is expected behavior. The only way to resolve the issue is to have access to the hosts certificates and keys.
I hope this helps. Please let me know if you need any additional information. Thank you for using the Fiddler Forums.
Regards,
Eric R | Senior Technical Support Engineer
Progress Telerik
Our thoughts here at Progress are with those affected by the outbreak.