Mozilla removed support for the non-standard (keygen) HTML element and HTMLKeygenElement DOM interface in Firefox 69. This aligns with the trend following other leading browsers:
This change does not affect active code signing certificates. They can be used until they expire.
When you generate the CSR for a code signing certificate, use Microsoft Internet Explorer or Apple Safari.
If your customer's or your environment only permits usage of Firefox, consider using or
For more information, see our
If you have questions or concerns, please contact Partner Support at sslpartnersupport@digicert.com.