The certificate is installed for the user that works with Fiddler Everywhere. To remove it, follow these steps:
1. Open the "Manage User Certificates" control panel window. The easiest way to do this is from the Windows Start Menu - search for "manage user".
2. In the window that opens, expand the "Trusted Root Certification Authorities" item and select "Certificates". In the list on the right, find the certificate with a name "DO_NOT_TRUST_FiddlerRoot".
3. Delete the certificate. There should be one or two prompts when you try to delete it - you must answer "Yes" in both cases to fully remove the certificate.
Also, It will be great if you can give us more context on what prompted you to delete the certificate, wondering if there is something that we can improve here.
how can I remove the fiddler everywhere root certificate that I previously installed in Windows 10?