I built the dedicated server from the official GitHub 5.6.1 release source, and the client with the Epic Games Launcher 5.6.1 engine, but I’m getting a connection error.
[2025.11.13-03.42.48:464][ 38]LogNet: Remote platform little endian=1
[2025.11.13-03.42.48:464][ 38]LogNet: This platform little endian=1
[2025.11.13-03.42.48:464][ 38]LogNet: NotifyControlMessage: Client IpConnection_2147482374 connecting with invalid version. LocalNetworkVersion: 3422667116, RemoteNetworkVersion: 1900791833, LocalNetFeatures=GenericReplication, RemoteNetFeatures=GenericReplication
[2025.11.13-03.42.48:465][ 38]LogNet: UNetConnection::Close: [UNetConnection] RemoteAddr: 10.30.152.211:59222, Name: IpConnection_2147482374, Driver: Name:GameNetDriver Def:GameNetDriver IpNetDriver_2147482491, IsServer: YES, PC: NULL, Owner: NULL, UniqueId: INVALID, Channels: 3, Time: 2025.11.13-03.42.48
[2025.11.13-03.42.48:465][ 38]LogNet: UNetConnection::SendCloseReason:
[2025.11.13-03.42.48:465][ 38]LogNet: - Result=Upgrade, ErrorContext=“Upgrade”
Is there any solution for this, or is there a way to get the exact engine source that matches the Epic Games Launcher 5.6.1?
Thanks.