
Savegames made with 1.10.3 should be compatible with Hearts of Iron IV's 1.10.4 patch.
Fixed a security flaw in networking where a user could kick/ban other players without being the host. Added extra checks to block clients with empty or blank username from joining a game. Fixed a security flaw in networking where a user could bypass lobby password protection. Below, you'll find the full patch notes for Hearts of Iron IV's Update 1.10.4.