Hmm. Uninstalling and reinstalling Avast7.0 39141 did apparently NOT fix this for me.
Where can I get that CA cert?
A simple reboot should be sufficient for fixing the missing certificate, when it is deleted by an Apple
security update. An uninstall/install procedure should work as well of course. If it does not work,
something went wrong when installing/uninstalling avast!.
Either there is no "avast! trusted CA" certificate in your system roots keychain, or there is an old
one not consistent with the one the web/mail shield is actualy using. The original certificate
file is located at
/Library/Application Support/Avast/config/certs/cacert.pem, but importing it
to the system roots keychain is a little bit tricky, as it can not be done using the Keychain Access
utility (the
security CLI tool must be used to do so).