Thanks for your replies.
[18:19:41] * Connecting to chat.freenode.net (+6697)
[18:19:41] * Unable to connect to server (SSL certificate chain error)
Indeed, other servers also make trouble when using SSL.
Your echo gives:
22.214.171.124 G:\mIRC\mirc.exe G:\mIRC\mirc.exe
Some years ago I had some DDLs like libeay32 and libssl32 inside G:\mIRC, but these have been removed by me some years ago (as mIRC included them)
Humm, weird.... any ideas?