How do I clear the certificate cache?

Where is the certificate cache, and how do I clear it, forcing the system to fetch a new copy of the email server’s certificate?

This is a Desktop, not a server. Thunderbird is apparently finding a cached certificate on my local system. I need to get Tumbleweed to go fetch the new certificate from my hosting company. The old certificate is not being saved by Thunderbird, I’ve already cleared the Thunderbird copy; but I can’t figure-out where Linux may be keeping a copy.

Thanks,
Lance

You could try clearing out the ‘~/.cache/’ directory – either from a VT (tty1 … tty6) or, after clearing the “.cache” directory, log out from the GUI session and then, log back in again.

Another place to check is any directory Thunderbird may have below ‘~/.local/share/’ …