I use A7.84 commercial.

Before (I upgraded a few days ago) I used A7.82.

All my multiplayer codes worked in that version.

All tests were done with deactivated firewall. There were no system changes since the upgrade.

Since I upgraded to A7.84 multiplayer clients fail to join a server correctly. The client starts and it says he joins the server (in the engine startup screen) but then after about two seconds the client quits. This also happens with the multiplayer samples from the samples folder (eg. pong_multiplayer.c). Neither development nor published versions work. With some simple debugging I found out so far, that there is no join event proceeded on the server when the client connects. The problems occur for lan or internet connections, it doesn't matter whether the programmes run on several or on the same Pc.