Certificate Import Problems with Sectigo Certificates
If you have this issue:
smime cert from Comodo (now Sectigo) using Firefox Enterprise import is failing in keychain.
I just got it to work after being on support with Sectigo.
You MUST use Firefox ESR version 68. This is an old version.
The new version fo Firefox ESR does NOT work which is why my certificate was failing.
iMac 21.5″, macOS 10.13