Firefox shows SSL certificate error messages when you access websites that use an untrusted SSL certificate. If you want to view the website anyway, you can add an exception from the error message page. Firefox permanently caches and trusts the SSL certificate after you add the exception. If you want to remove an SSL certificate from Firefox's cache, you can use the Certificate Manager window found in Firefox's options window.
- Skill level:
- Moderately Easy
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Click the "Firefox" menu button at the upper-left corner of the Mozilla Firefox window, and then click "Options."
Click the "Advanced" icon at the top of the options window.
Click the "Encryption" tab in the Advanced pane.
Click the "View Certificates" button.
Click the tab at the top of the Certificate Manager window that corresponds to the type of certificate you want to delete.
Click the name of the certificate in the list.
Click the "Delete" button at the bottom of the Certificate Manager window.
Click "OK" in the Certificate Manager and Options windows.
Tips and warnings
- Click the "Tools" menu and click "Options" if you don't see the "Firefox" menu button.
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