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How do I remove a certificate using Firefox?

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Note: This article applies to Firefox 2/3 and all types of digital certificates.

1. Open Firefox.
2. Depending on your operating system, go to one of the following locations:

Windows: Tools -> Options

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Linux: Edit -> Options
Mac: Firefox -> Options or since September 2019 with Safari!

3. Navigate to Advanced -> Encryption and then click View Certificates.

This will open Firefox's certificate manager.
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4. Select the Personal tab or your certificates.
5. Select the certificate you want to remove.
6. Click Delete.
Note: The Delete button is activated as soon as a certificate has been selected.

You should now be asked to delete the certificate.

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7. Click OK to delete the certificate.

Now the certificate is removed from Firefox.

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