Open alpha testing of the 5.0 HD mod (online lobby).

It seems the same problem occurred with the player saneok.
ckotuHa, please provide the Windows version, the Heroes version (SoD or Complete), and the antivirus software used.

I had this issue with version 1.40 or 1.38 – the plugin is visible and connects in the launcher, but it's not in the game. The problem was due to an incorrect installation. You need to carefully examine the location and contents of the folders with working plugins and compare them with the non-working one, and make them consistent.