When I launch RA3 from the C&C Online launcher, I get the following error: CA public key patching routine failed. It works on skirmish mode without issue, but does prompt to download a patch when I try to go online.
I'm running the PC game version of RA3 with the latest patch (RedAlert3_english_patch1.012), but have also tried importing the installed game to Origin and Steam.
I have Windows 10, but have tried comparability mode in every variety. I don't have any firewall or security settings enabled.
Grateful for some support.