Failed to spawn Network Object when Client Joins #3897

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1. Magman3000

   added

   type:bugBug ReportBug Report

   stat:awaiting-triageStatus - Awaiting triage from the Netcode team.Status - Awaiting triage from the Netcode team.

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   on Mar 13, 2026
2. EmandM commented on Mar 13, 2026

   

   EmandM

   on Mar 13, 2026

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   Are you sure that the prefab you're trying to load is registered against the NetworkManager in both the build and the Editor?
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   on Mar 13, 2026
4. Magman3000

   closed this as completedon Mar 13, 2026
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   stat:awaiting-triageStatus - Awaiting triage from the Netcode team.Status - Awaiting triage from the Netcode team.

   on Mar 13, 2026
6. Magman3000 commented on Mar 13, 2026

   

   Magman3000

   on Mar 13, 2026

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   Yes, at least as far as I can find.

   When hosting with the editor, error messages disappear, but things still don't work

   PS: Why is "Close Issue" the default?
7. Magman3000

   reopened this on Mar 13, 2026
8. EmandM

   marked Failed to spawn Network Object when Client Joins #3900 as a duplicate of this issue on Mar 16, 2026
9. EmandM commented on Mar 16, 2026

   

   EmandM

   on Mar 16, 2026

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   Hmmm, it looks like there's an issue inside our RPC processing that's causing things after it to fail. Could you move any RPC calls that you have inside OnNetworkSpawn into OnNetworkPostSpawn? Or try without calling any RPCs during the player spawning?

   We can maybe help further if you can post the code that you have inside the NetworkBehaviours that are attached to your player prefab?
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    on Mar 16, 2026
11. Magman3000 commented on Mar 16, 2026

    

    Magman3000

    on Mar 16, 2026

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    With Client Calling RPC disabbled

    

    [Netcode] Failed to create object locally. [globalObjectIdHash=3783451317]. NetworkPrefab could not be found. Is the prefab registered with NetworkManager?
    UnityEngine.Debug:LogError (object)
    Unity.Netcode.NetworkLog:LogError (string) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Logging/NetworkLog.cs:34)
    Unity.Netcode.NetworkSpawnManager:GetNetworkObjectToSpawn (uint,ulong,System.Nullable1<UnityEngine.Vector3>,System.Nullable1<UnityEngine.Quaternion>,bool,byte[]) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Spawning/NetworkSpawnManager.cs:863)
    Unity.Netcode.NetworkSpawnManager:CreateLocalNetworkObject (Unity.Netcode.NetworkObject/SerializedObject,byte[]) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Spawning/NetworkSpawnManager.cs:915)
    Unity.Netcode.NetworkObject:Deserialize (Unity.Netcode.NetworkObject/SerializedObject&,Unity.Netcode.FastBufferReader,Unity.Netcode.NetworkManager,bool) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Core/NetworkObject.cs:3265)
    Unity.Netcode.SceneEventData:SynchronizeSceneNetworkObjects (Unity.Netcode.NetworkManager) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/SceneManagement/SceneEventData.cs:1132)
    Unity.Netcode.NetworkSceneManager:HandleClientSceneEvent (uint) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/SceneManagement/NetworkSceneManager.cs:2329)
    Unity.Netcode.NetworkSceneManager:ClientLoadedSynchronization (uint) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/SceneManagement/NetworkSceneManager.cs:2224)
    Unity.Netcode.NetworkSceneManager:OnClientBeginSync (uint) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/SceneManagement/NetworkSceneManager.cs:2155)
    Unity.Netcode.NetworkSceneManager:HandleClientSceneEvent (uint) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/SceneManagement/NetworkSceneManager.cs:2311)
    Unity.Netcode.NetworkSceneManager:HandleSceneEvent (ulong,Unity.Netcode.FastBufferReader) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/SceneManagement/NetworkSceneManager.cs:2656)
    Unity.Netcode.SceneEventMessage:Handle (Unity.Netcode.NetworkContext&) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Messaging/Messages/SceneEventMessage.cs:29)
    Unity.Netcode.NetworkMessageManager:ReceiveMessage<Unity.Netcode.SceneEventMessage> (Unity.Netcode.FastBufferReader,Unity.Netcode.NetworkContext&,Unity.Netcode.NetworkMessageManager) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Messaging/NetworkMessageManager.cs:568)
    Unity.Netcode.NetworkMessageManager:HandleMessage (Unity.Netcode.NetworkMessageHeader&,Unity.Netcode.FastBufferReader,ulong,single,int) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Messaging/NetworkMessageManager.cs:422)
    Unity.Netcode.NetworkMessageManager:ProcessIncomingMessageQueue () (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Messaging/NetworkMessageManager.cs:448)
    Unity.Netcode.NetworkManager:NetworkUpdate (Unity.Netcode.NetworkUpdateStage) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Core/NetworkManager.cs:349)
    Unity.Netcode.NetworkUpdateLoop:RunNetworkUpdateStage (Unity.Netcode.NetworkUpdateStage) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Core/NetworkUpdateLoop.cs:191)
    Unity.Netcode.NetworkUpdateLoop/NetworkEarlyUpdate/<>c:b__0_0 () (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Core/NetworkUpdateLoop.cs:214)

    [Netcode] Failed to spawn NetworkObject for Hash 3783451317.
    UnityEngine.Debug:LogError (object)
    Unity.Netcode.NetworkLog:LogError (string) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Logging/NetworkLog.cs:34)
    Unity.Netcode.NetworkObject:Deserialize (Unity.Netcode.NetworkObject/SerializedObject&,Unity.Netcode.FastBufferReader,Unity.Netcode.NetworkManager,bool) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Core/NetworkObject.cs:3273)
    Unity.Netcode.SceneEventData:SynchronizeSceneNetworkObjects (Unity.Netcode.NetworkManager) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/SceneManagement/SceneEventData.cs:1132)
    Unity.Netcode.NetworkSceneManager:HandleClientSceneEvent (uint) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/SceneManagement/NetworkSceneManager.cs:2329)
    Unity.Netcode.NetworkSceneManager:ClientLoadedSynchronization (uint) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/SceneManagement/NetworkSceneManager.cs:2224)
    Unity.Netcode.NetworkSceneManager:OnClientBeginSync (uint) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/SceneManagement/NetworkSceneManager.cs:2155)
    Unity.Netcode.NetworkSceneManager:HandleClientSceneEvent (uint) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/SceneManagement/NetworkSceneManager.cs:2311)
    Unity.Netcode.NetworkSceneManager:HandleSceneEvent (ulong,Unity.Netcode.FastBufferReader) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/SceneManagement/NetworkSceneManager.cs:2656)
    Unity.Netcode.SceneEventMessage:Handle (Unity.Netcode.NetworkContext&) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Messaging/Messages/SceneEventMessage.cs:29)
    Unity.Netcode.NetworkMessageManager:ReceiveMessage<Unity.Netcode.SceneEventMessage> (Unity.Netcode.FastBufferReader,Unity.Netcode.NetworkContext&,Unity.Netcode.NetworkMessageManager) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Messaging/NetworkMessageManager.cs:568)
    Unity.Netcode.NetworkMessageManager:HandleMessage (Unity.Netcode.NetworkMessageHeader&,Unity.Netcode.FastBufferReader,ulong,single,int) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Messaging/NetworkMessageManager.cs:422)
    Unity.Netcode.NetworkMessageManager:ProcessIncomingMessageQueue () (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Messaging/NetworkMessageManager.cs:448)
    Unity.Netcode.NetworkManager:NetworkUpdate (Unity.Netcode.NetworkUpdateStage) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Core/NetworkManager.cs:349)
    Unity.Netcode.NetworkUpdateLoop:RunNetworkUpdateStage (Unity.Netcode.NetworkUpdateStage) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Core/NetworkUpdateLoop.cs:191)
    Unity.Netcode.NetworkUpdateLoop/NetworkEarlyUpdate/<>c:b__0_0 () (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Core/NetworkUpdateLoop.cs:214)

    With Client Calling RPC from Pre spawned script.

    

    [Netcode] Failed to create object locally. [globalObjectIdHash=3783451317]. NetworkPrefab could not be found. Is the prefab registered with NetworkManager?
    UnityEngine.Debug:LogError (object)
    Unity.Netcode.NetworkLog:LogError (string) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Logging/NetworkLog.cs:34)
    Unity.Netcode.NetworkSpawnManager:GetNetworkObjectToSpawn (uint,ulong,System.Nullable1<UnityEngine.Vector3>,System.Nullable1<UnityEngine.Quaternion>,bool,byte[]) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Spawning/NetworkSpawnManager.cs:863)
    Unity.Netcode.NetworkSpawnManager:CreateLocalNetworkObject (Unity.Netcode.NetworkObject/SerializedObject,byte[]) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Spawning/NetworkSpawnManager.cs:915)
    Unity.Netcode.NetworkObject:Deserialize (Unity.Netcode.NetworkObject/SerializedObject&,Unity.Netcode.FastBufferReader,Unity.Netcode.NetworkManager,bool) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Core/NetworkObject.cs:3265)
    Unity.Netcode.SceneEventData:SynchronizeSceneNetworkObjects (Unity.Netcode.NetworkManager) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/SceneManagement/SceneEventData.cs:1132)
    Unity.Netcode.NetworkSceneManager:HandleClientSceneEvent (uint) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/SceneManagement/NetworkSceneManager.cs:2329)
    Unity.Netcode.NetworkSceneManager:ClientLoadedSynchronization (uint) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/SceneManagement/NetworkSceneManager.cs:2224)
    Unity.Netcode.NetworkSceneManager:OnClientBeginSync (uint) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/SceneManagement/NetworkSceneManager.cs:2155)
    Unity.Netcode.NetworkSceneManager:HandleClientSceneEvent (uint) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/SceneManagement/NetworkSceneManager.cs:2311)
    Unity.Netcode.NetworkSceneManager:HandleSceneEvent (ulong,Unity.Netcode.FastBufferReader) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/SceneManagement/NetworkSceneManager.cs:2656)
    Unity.Netcode.SceneEventMessage:Handle (Unity.Netcode.NetworkContext&) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Messaging/Messages/SceneEventMessage.cs:29)
    Unity.Netcode.NetworkMessageManager:ReceiveMessage<Unity.Netcode.SceneEventMessage> (Unity.Netcode.FastBufferReader,Unity.Netcode.NetworkContext&,Unity.Netcode.NetworkMessageManager) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Messaging/NetworkMessageManager.cs:568)
    Unity.Netcode.NetworkMessageManager:HandleMessage (Unity.Netcode.NetworkMessageHeader&,Unity.Netcode.FastBufferReader,ulong,single,int) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Messaging/NetworkMessageManager.cs:422)
    Unity.Netcode.NetworkMessageManager:ProcessIncomingMessageQueue () (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Messaging/NetworkMessageManager.cs:448)
    Unity.Netcode.NetworkManager:NetworkUpdate (Unity.Netcode.NetworkUpdateStage) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Core/NetworkManager.cs:349)
    Unity.Netcode.NetworkUpdateLoop:RunNetworkUpdateStage (Unity.Netcode.NetworkUpdateStage) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Core/NetworkUpdateLoop.cs:191)
    Unity.Netcode.NetworkUpdateLoop/NetworkEarlyUpdate/<>c:b__0_0 () (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Core/NetworkUpdateLoop.cs:214)

    [Netcode] Failed to spawn NetworkObject for Hash 3783451317.
    UnityEngine.Debug:LogError (object)
    Unity.Netcode.NetworkLog:LogError (string) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Logging/NetworkLog.cs:34)
    Unity.Netcode.NetworkObject:Deserialize (Unity.Netcode.NetworkObject/SerializedObject&,Unity.Netcode.FastBufferReader,Unity.Netcode.NetworkManager,bool) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Core/NetworkObject.cs:3273)
    Unity.Netcode.SceneEventData:SynchronizeSceneNetworkObjects (Unity.Netcode.NetworkManager) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/SceneManagement/SceneEventData.cs:1132)
    Unity.Netcode.NetworkSceneManager:HandleClientSceneEvent (uint) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/SceneManagement/NetworkSceneManager.cs:2329)
    Unity.Netcode.NetworkSceneManager:ClientLoadedSynchronization (uint) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/SceneManagement/NetworkSceneManager.cs:2224)
    Unity.Netcode.NetworkSceneManager:OnClientBeginSync (uint) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/SceneManagement/NetworkSceneManager.cs:2155)
    Unity.Netcode.NetworkSceneManager:HandleClientSceneEvent (uint) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/SceneManagement/NetworkSceneManager.cs:2311)
    Unity.Netcode.NetworkSceneManager:HandleSceneEvent (ulong,Unity.Netcode.FastBufferReader) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/SceneManagement/NetworkSceneManager.cs:2656)
    Unity.Netcode.SceneEventMessage:Handle (Unity.Netcode.NetworkContext&) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Messaging/Messages/SceneEventMessage.cs:29)
    Unity.Netcode.NetworkMessageManager:ReceiveMessage<Unity.Netcode.SceneEventMessage> (Unity.Netcode.FastBufferReader,Unity.Netcode.NetworkContext&,Unity.Netcode.NetworkMessageManager) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Messaging/NetworkMessageManager.cs:568)
    Unity.Netcode.NetworkMessageManager:HandleMessage (Unity.Netcode.NetworkMessageHeader&,Unity.Netcode.FastBufferReader,ulong,single,int) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Messaging/NetworkMessageManager.cs:422)
    Unity.Netcode.NetworkMessageManager:ProcessIncomingMessageQueue () (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Messaging/NetworkMessageManager.cs:448)
    Unity.Netcode.NetworkManager:NetworkUpdate (Unity.Netcode.NetworkUpdateStage) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Core/NetworkManager.cs:349)
    Unity.Netcode.NetworkUpdateLoop:RunNetworkUpdateStage (Unity.Netcode.NetworkUpdateStage) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Core/NetworkUpdateLoop.cs:191)
    Unity.Netcode.NetworkUpdateLoop/NetworkEarlyUpdate/<>c:b__0_0 () (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Core/NetworkUpdateLoop.cs:214)

    [Netcode] Failed to create object locally. [globalObjectIdHash=161353281]. NetworkPrefab could not be found. Is the prefab registered with NetworkManager?
    UnityEngine.Debug:LogError (object)
    Unity.Netcode.NetworkLog:LogError (string) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Logging/NetworkLog.cs:34)
    Unity.Netcode.NetworkSpawnManager:GetNetworkObjectToSpawn (uint,ulong,System.Nullable1<UnityEngine.Vector3>,System.Nullable1<UnityEngine.Quaternion>,bool,byte[]) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Spawning/NetworkSpawnManager.cs:863)
    Unity.Netcode.NetworkSpawnManager:CreateLocalNetworkObject (Unity.Netcode.NetworkObject/SerializedObject,byte[]) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Spawning/NetworkSpawnManager.cs:915)
    Unity.Netcode.NetworkObject:Deserialize (Unity.Netcode.NetworkObject/SerializedObject&,Unity.Netcode.FastBufferReader,Unity.Netcode.NetworkManager,bool) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Core/NetworkObject.cs:3265)
    Unity.Netcode.SceneEventData:SynchronizeSceneNetworkObjects (Unity.Netcode.NetworkManager) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/SceneManagement/SceneEventData.cs:1132)
    Unity.Netcode.NetworkSceneManager:HandleClientSceneEvent (uint) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/SceneManagement/NetworkSceneManager.cs:2329)
    Unity.Netcode.NetworkSceneManager:ClientLoadedSynchronization (uint) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/SceneManagement/NetworkSceneManager.cs:2224)
    Unity.Netcode.NetworkSceneManager:OnClientBeginSync (uint) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/SceneManagement/NetworkSceneManager.cs:2155)
    Unity.Netcode.NetworkSceneManager:HandleClientSceneEvent (uint) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/SceneManagement/NetworkSceneManager.cs:2311)
    Unity.Netcode.NetworkSceneManager:HandleSceneEvent (ulong,Unity.Netcode.FastBufferReader) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/SceneManagement/NetworkSceneManager.cs:2656)
    Unity.Netcode.SceneEventMessage:Handle (Unity.Netcode.NetworkContext&) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Messaging/Messages/SceneEventMessage.cs:29)
    Unity.Netcode.NetworkMessageManager:ReceiveMessage<Unity.Netcode.SceneEventMessage> (Unity.Netcode.FastBufferReader,Unity.Netcode.NetworkContext&,Unity.Netcode.NetworkMessageManager) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Messaging/NetworkMessageManager.cs:568)
    Unity.Netcode.NetworkMessageManager:HandleMessage (Unity.Netcode.NetworkMessageHeader&,Unity.Netcode.FastBufferReader,ulong,single,int) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Messaging/NetworkMessageManager.cs:422)
    Unity.Netcode.NetworkMessageManager:ProcessIncomingMessageQueue () (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Messaging/NetworkMessageManager.cs:448)
    Unity.Netcode.NetworkManager:NetworkUpdate (Unity.Netcode.NetworkUpdateStage) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Core/NetworkManager.cs:349)
    Unity.Netcode.NetworkUpdateLoop:RunNetworkUpdateStage (Unity.Netcode.NetworkUpdateStage) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Core/NetworkUpdateLoop.cs:191)
    Unity.Netcode.NetworkUpdateLoop/NetworkEarlyUpdate/<>c:b__0_0 () (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Core/NetworkUpdateLoop.cs:214)

    [Netcode] Failed to spawn NetworkObject for Hash 161353281.
    UnityEngine.Debug:LogError (object)
    Unity.Netcode.NetworkLog:LogError (string) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Logging/NetworkLog.cs:34)
    Unity.Netcode.NetworkObject:Deserialize (Unity.Netcode.NetworkObject/SerializedObject&,Unity.Netcode.FastBufferReader,Unity.Netcode.NetworkManager,bool) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Core/NetworkObject.cs:3273)
    Unity.Netcode.SceneEventData:SynchronizeSceneNetworkObjects (Unity.Netcode.NetworkManager) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/SceneManagement/SceneEventData.cs:1132)
    Unity.Netcode.NetworkSceneManager:HandleClientSceneEvent (uint) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/SceneManagement/NetworkSceneManager.cs:2329)
    Unity.Netcode.NetworkSceneManager:ClientLoadedSynchronization (uint) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/SceneManagement/NetworkSceneManager.cs:2224)
    Unity.Netcode.NetworkSceneManager:OnClientBeginSync (uint) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/SceneManagement/NetworkSceneManager.cs:2155)
    Unity.Netcode.NetworkSceneManager:HandleClientSceneEvent (uint) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/SceneManagement/NetworkSceneManager.cs:2311)
    Unity.Netcode.NetworkSceneManager:HandleSceneEvent (ulong,Unity.Netcode.FastBufferReader) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/SceneManagement/NetworkSceneManager.cs:2656)
    Unity.Netcode.SceneEventMessage:Handle (Unity.Netcode.NetworkContext&) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Messaging/Messages/SceneEventMessage.cs:29)
    Unity.Netcode.NetworkMessageManager:ReceiveMessage<Unity.Netcode.SceneEventMessage> (Unity.Netcode.FastBufferReader,Unity.Netcode.NetworkContext&,Unity.Netcode.NetworkMessageManager) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Messaging/NetworkMessageManager.cs:568)
    Unity.Netcode.NetworkMessageManager:HandleMessage (Unity.Netcode.NetworkMessageHeader&,Unity.Netcode.FastBufferReader,ulong,single,int) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Messaging/NetworkMessageManager.cs:422)
    Unity.Netcode.NetworkMessageManager:ProcessIncomingMessageQueue () (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Messaging/NetworkMessageManager.cs:448)
    Unity.Netcode.NetworkManager:NetworkUpdate (Unity.Netcode.NetworkUpdateStage) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Core/NetworkManager.cs:349)
    Unity.Netcode.NetworkUpdateLoop:RunNetworkUpdateStage (Unity.Netcode.NetworkUpdateStage) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Core/NetworkUpdateLoop.cs:191)
    Unity.Netcode.NetworkUpdateLoop/NetworkEarlyUpdate/<>c:b__0_0 () (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Core/NetworkUpdateLoop.cs:214)

    NullReferenceException: Object reference not set to an instance of an object
    Unity.Netcode.NetworkBehaviour.__endSendRpc (Unity.Netcode.FastBufferWriter& bufferWriter, System.UInt32 rpcMethodId, Unity.Netcode.RpcParams rpcParams, Unity.Netcode.RpcAttribute+RpcAttributeParams attributeParams, Unity.Netcode.SendTo defaultTarget, Unity.Netcode.RpcDelivery rpcDelivery) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Core/NetworkBehaviour.cs:354)
    SceneControl.AddPlayer_ServerRpc (Unity.Netcode.NetworkBehaviourReference playRef) (at Assets/Scripts/GameState/SceneControl.cs:28)
    SceneControl.AddPlayer (PlayerController player) (at Assets/Scripts/GameState/SceneControl.cs:22)
    PlayerController.OnEnable () (at Assets/Scripts/Player/PlayerController.cs:35)
    UnityEngine.Behaviour:set_enabled(Boolean)
    Enabler:Enable(Int32) (at Assets/Scripts/Player/Enabler.cs:22)
    Enabler:OnNetworkSpawn() (at Assets/Scripts/Player/Enabler.cs:12)
    Unity.Netcode.NetworkBehaviour:NetworkSpawn() (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Core/NetworkBehaviour.cs:814)
    Unity.Netcode.NetworkObject:InvokeBehaviourNetworkSpawn() (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Core/NetworkObject.cs:2553)
    Unity.Netcode.NetworkSpawnManager:SpawnNetworkObjectLocallyCommon(NetworkObject, UInt64, Boolean, Boolean, UInt64, Boolean) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Spawning/NetworkSpawnManager.cs:1208)
    Unity.Netcode.NetworkSpawnManager:NonAuthorityLocalSpawn(NetworkObject, SerializedObject&, Boolean) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Spawning/NetworkSpawnManager.cs:1129)
    Unity.Netcode.NetworkObject:Deserialize(SerializedObject&, FastBufferReader, NetworkManager, Boolean) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Core/NetworkObject.cs:3335)
    Unity.Netcode.SceneEventData:SynchronizeSceneNetworkObjects(NetworkManager) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/SceneManagement/SceneEventData.cs:1132)
    Unity.Netcode.NetworkSceneManager:HandleClientSceneEvent(UInt32) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/SceneManagement/NetworkSceneManager.cs:2329)
    Unity.Netcode.NetworkSceneManager:ClientLoadedSynchronization(UInt32) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/SceneManagement/NetworkSceneManager.cs:2224)
    Unity.Netcode.NetworkSceneManager:OnClientBeginSync(UInt32) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/SceneManagement/NetworkSceneManager.cs:2155)
    Unity.Netcode.NetworkSceneManager:HandleClientSceneEvent(UInt32) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/SceneManagement/NetworkSceneManager.cs:2311)
    Unity.Netcode.NetworkSceneManager:HandleSceneEvent(UInt64, FastBufferReader) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/SceneManagement/NetworkSceneManager.cs:2656)
    Unity.Netcode.SceneEventMessage:Handle(NetworkContext&) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Messaging/Messages/SceneEventMessage.cs:29)
    Unity.Netcode.NetworkMessageManager:ReceiveMessage(FastBufferReader, NetworkContext&, NetworkMessageManager) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Messaging/NetworkMessageManager.cs:568)
    Unity.Netcode.NetworkMessageManager:HandleMessage(NetworkMessageHeader&, FastBufferReader, UInt64, Single, Int32) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Messaging/NetworkMessageManager.cs:422)
    Unity.Netcode.NetworkMessageManager:ProcessIncomingMessageQueue() (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Messaging/NetworkMessageManager.cs:448)
    Unity.Netcode.NetworkManager:NetworkUpdate(NetworkUpdateStage) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Core/NetworkManager.cs:349)
    Unity.Netcode.NetworkUpdateLoop:RunNetworkUpdateStage(NetworkUpdateStage) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Core/NetworkUpdateLoop.cs:191)
    Unity.Netcode.<>c:b__0_0() (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Core/NetworkUpdateLoop.cs:214)
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13. NoelStephensUnity commented on Apr 13, 2026

    

    NoelStephensUnity

    on Apr 13, 2026

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    @Squashi11
    Magman3000's response would resolve the issue if it was an in-scene placed instance of a registered prefab.

    Regarding providing a name, the error is occurring on the client side which means it has received a spawn message or is synchronizing and the only information available (at the time it is failing) is the GlobalObjectIdHash for the prefab it could not find...which if it could be found then we could provide the name of the prefab (which I do agree would be helpful)...but since it is not available it becomes a bit trickier.

    👍React with 👍1Reacted by Squashi
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15. EmandM commented on Apr 14, 2026

    

    EmandM

    on Apr 14, 2026

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    The name was added to the debug log in #3907. That change will be included in the next release!

    Edit: I was mistaken, that change is unrelated to this issue.

    👀React with 👀1Reacted by Squashi
16. Squashi11 commented on Apr 15, 2026

    

    Squashi11

    on Apr 15, 2026

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    The name was added to the debug log in #3907. That change will be included in the next release!

    Great! Do you happen to know the release date of the next NGO version..? (or what is the release schedule?) because it has been 3 weeks so far, thanks
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18. NoelStephensUnity commented on Apr 21, 2026

    

    NoelStephensUnity

    on Apr 21, 2026

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    Hi @Squashi11,
    @EmandM mistakenly thought this was a different issue you had filed.
    However, there is some work in progress that will include a fix to change that log from a local log to a local log that also triggers a log on the server side where the server can provide additional information about the prefab in question.

    ❤️React with ❤️1Reacted by Squashi
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20. NoelStephensUnity commented on Apr 21, 2026

    

    NoelStephensUnity

    on Apr 21, 2026

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    @Magman3000
    Is this issue similar or related to #3942?
    If so, then I will close this issue out as a duplicate and we can focus on #3942.
21. github-actions commented on May 8, 2026

    

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    This issue has been automatically marked as stale because it has been awaiting response for over 2 weeks without any activity.
    Please update the issue with any new information or it may be closed in 2 weeks.
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23. github-actions commented on May 22, 2026

    

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    This issue has been automatically closed because it has been stale for 2 weeks without any activity. Feel free to reopen if you have new information to add.
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    closed this as not plannedon May 22, 2026