diff --git a/Barotrauma/BarotraumaClient/Source/Networking/GameClient.cs b/Barotrauma/BarotraumaClient/Source/Networking/GameClient.cs
index deebab3d5..96fbc7dfe 100644
--- a/Barotrauma/BarotraumaClient/Source/Networking/GameClient.cs
+++ b/Barotrauma/BarotraumaClient/Source/Networking/GameClient.cs
@@ -1029,9 +1029,10 @@ namespace Barotrauma.Networking
 
             EndVoteTickBox.Selected = false;
 
-            int seed                = inc.ReadInt32();
-            string levelSeed        = inc.ReadString();
-            float levelDifficulty   = inc.ReadFloat();
+            int seed                    = inc.ReadInt32();
+            string levelSeed            = inc.ReadString();
+            int levelEqualityCheckVal   = inc.ReadInt32();
+            float levelDifficulty       = inc.ReadFloat();
 
             byte losMode            = inc.ReadByte();
 
@@ -1100,6 +1101,14 @@ namespace Barotrauma.Networking
                     mirrorLevel: campaign.Map.CurrentLocation != campaign.Map.SelectedConnection.Locations[0]);
             }
 
+            if (Level.Loaded.EqualityCheckVal != levelEqualityCheckVal)
+            {
+                string errorMsg = " Level equality check failed. The level generated at your end doesn't match the level generated by the server (seed " + Level.Loaded.Seed + ").";
+                DebugConsole.ThrowError(errorMsg, createMessageBox: true);
+                CoroutineManager.StartCoroutine(EndGame(""));
+                yield return CoroutineStatus.Failure;
+            }
+
             if (respawnAllowed) respawnManager = new RespawnManager(this, GameMain.NetLobbyScreen.UsingShuttle ? GameMain.NetLobbyScreen.SelectedShuttle : null);
 
             gameStarted = true;
@@ -1414,7 +1423,7 @@ namespace Barotrauma.Networking
                         break;
                     case ServerNetObject.ENTITY_EVENT:
                     case ServerNetObject.ENTITY_EVENT_INITIAL:
-                        entityEventManager.Read(objHeader, inc, sendingTime, entities);
+                        if (!entityEventManager.Read(objHeader, inc, sendingTime, entities)) { break; }
                         break;
                     case ServerNetObject.CHAT_MESSAGE:
                         ChatMessage.ClientRead(inc);
diff --git a/Barotrauma/BarotraumaClient/Source/Networking/NetEntityEvent/ClientEntityEventManager.cs b/Barotrauma/BarotraumaClient/Source/Networking/NetEntityEvent/ClientEntityEventManager.cs
index a17d20aac..f7451440a 100644
--- a/Barotrauma/BarotraumaClient/Source/Networking/NetEntityEvent/ClientEntityEventManager.cs
+++ b/Barotrauma/BarotraumaClient/Source/Networking/NetEntityEvent/ClientEntityEventManager.cs
@@ -114,9 +114,9 @@ namespace Barotrauma.Networking
         private UInt16? firstNewID;
 
         /// <summary>
-        /// Read the events from the message, ignoring ones we've already received
+        /// Read the events from the message, ignoring ones we've already received. Returns false if reading the events fails.
         /// </summary>
-        public void Read(ServerNetObject type, NetIncomingMessage msg, float sendingTime, List<IServerSerializable> entities)
+        public bool Read(ServerNetObject type, NetIncomingMessage msg, float sendingTime, List<IServerSerializable> entities)
         {
             UInt16 unreceivedEntityEventCount = 0;
 
@@ -192,6 +192,7 @@ namespace Barotrauma.Networking
                             "Received msg " + thisEventID + ", entity " + entityID + " not found",
                             Microsoft.Xna.Framework.Color.Red);
                         GameMain.Client.ReportError(ClientNetError.MISSING_ENTITY, eventID: thisEventID, entityID: entityID);
+                        return false;
                     }
                     
                     msg.Position += msgLength * 8;
@@ -230,6 +231,7 @@ namespace Barotrauma.Networking
                 }
                 msg.ReadPadBits();
             }
+            return true;
         }
 
         protected override void WriteEvent(NetBuffer buffer, NetEntityEvent entityEvent, Client recipient = null)
diff --git a/Barotrauma/BarotraumaServer/Source/Networking/GameServer.cs b/Barotrauma/BarotraumaServer/Source/Networking/GameServer.cs
index 4c4641540..0bf1f2535 100644
--- a/Barotrauma/BarotraumaServer/Source/Networking/GameServer.cs
+++ b/Barotrauma/BarotraumaServer/Source/Networking/GameServer.cs
@@ -734,9 +734,57 @@ namespace Barotrauma.Networking
                         fileSender.ReadFileRequest(inc, connectedClient);
                     }
                     break;
+                case ClientPacketHeader.ERROR:
+                    HandleClientError(inc, connectedClient);
+                    break;
             }
         }
 
+        private void HandleClientError(NetIncomingMessage inc, Client c)
+        {
+            string errorStr = "Unhandled error report";
+
+            ClientNetError error = (ClientNetError)inc.ReadByte();
+            int levelEqualityCheckVal = inc.ReadInt32();
+            switch (error)
+            {
+                case ClientNetError.MISSING_EVENT:
+                    UInt16 expectedID = inc.ReadUInt16();
+                    UInt16 receivedID = inc.ReadUInt16();
+                    errorStr = "Expecting event id " + expectedID.ToString() + ", received " + receivedID.ToString();
+                    break;
+                case ClientNetError.MISSING_ENTITY:
+                    UInt16 eventID = inc.ReadUInt16();
+                    UInt16 entityID = inc.ReadUInt16();
+                    Entity entity = Entity.FindEntityByID(entityID);
+                    if (entity == null)
+                    {
+                        errorStr = "Received an update for an entity that doesn't exist (event id " + eventID.ToString() + ", entity id " + entityID.ToString() + ").";
+                    }
+                    else if (entity is Character character)
+                    {
+                        errorStr = "Missing character " + character.Name + " (event id " + eventID.ToString() + ", entity id " + entityID.ToString() + ").";
+                    }
+                    else if (entity is Item item)
+                    {
+                        errorStr = "Missing item " + item.Name + " (event id " + eventID.ToString() + ", entity id " + entityID.ToString() + ").";
+                    }
+                    else
+                    {
+                        errorStr = "Missing entity " + entity.ToString() + " (event id " + eventID.ToString() + ", entity id " + entityID.ToString() + ").";
+                    }
+                    break;
+            }
+
+            if (Level.Loaded != null && levelEqualityCheckVal != Level.Loaded.EqualityCheckVal)
+            {
+                errorStr += " Level equality check failed. The level generated at your end doesn't match the level generated by the server (seed " + Level.Loaded.Seed + ").";
+            }
+
+            Log(c.Name + " has reported an error: " + errorStr, ServerLog.MessageType.Error);
+            KickClient(c, errorStr);
+        }
+
         public override void CreateEntityEvent(INetSerializable entity, object[] extraData = null)
         {
             if (!(entity is IServerSerializable)) throw new InvalidCastException("entity is not IServerSerializable");
@@ -1759,6 +1807,7 @@ namespace Barotrauma.Networking
 
             msg.Write(seed);
             msg.Write(GameMain.GameSession.Level.Seed);
+            msg.Write(GameMain.GameSession.Level.EqualityCheckVal);
             msg.Write(serverSettings.SelectedLevelDifficulty);
 
             msg.Write((byte)GameMain.Config.LosMode);