"Unable to validate certificate"

[Alex Oren]

On 2018-01-07 3:36 PM, Eion Robb wrote:
> https://textslashplain.com/2017/10/23/google-internet-authority-g3/ has some info about the new Root CA and Intermediate CA certs that Google are rolling out.  On Pidgin on Windows we don't include the new "Google Trust Services" ca-cert, so it'll keep bugging you about it

Is it possible to manually add that certificate to Pidgin?