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Macintosh. How to delete an electronic certificate in Safari
On the Macintosh operating system with the Safari browser, the certificate is installed in the "Keychain Access" of Mac . To remove it follow these instructions:
Go to "Finder", "Applications", "Utilities", "Keychain Access".
See Also
Determine if a certificate is valid using Keychain Access on MacGet information about a certificate in Keychain Access on MacNET::ERR_CERT_INVALID: How to Fix the error: Your connection isn’t private Attackers might be…Clearing cached and saved Mac OS credentials - IST Knowledge Base
Select "Login" and click on "My Certificates". Select the electronic certificate and right-click on the certificate name (or press the "Control" key while left-clicking on the certificate). In the drop-down menu, check the "Delete" entry next to the certificate name.
Confirm again by pressing the "Delete" button.
