Minecraft Network Protocol Error

Discus and support Minecraft Network Protocol Error in XBoX Games and Apps to solve the problem; Currently trying to play cobblemon through curseforge and i keep receiving a error when trying to join the server I made. crash report: ----... Discussion in 'XBoX Games and Apps' started by bingusfarts, Mar 9, 2025.

  1. bingusfarts
    bingusfarts Guest

    Minecraft Network Protocol Error


    Currently trying to play cobblemon through curseforge and i keep receiving a error when trying to join the server I made.

    crash report:

    ---- Minecraft Network Protocol Error Report ---- // What we've got here is failure to communicate Time: 2025-03-08 23:03:02 Description: Packet handling error java.lang.IllegalStateException: Invalid entity data item type for field 17 on entity class_746[''/690, l='ClientLevel', x=-4.55, y=123.00, z=13.70]: old=0(class java.lang.Integer), new=127(class java.lang.Byte) at knot//net.minecraft.class_2945.method_12785(class_2945.java:126) at knot//net.minecraft.class_2945.method_12779(class_2945.java:117) at knot//net.minecraft.class_634.method_11093(class_634.java:553) at knot//net.minecraft.class_2739.method_11808(class_2739.java:54) at knot//net.minecraft.class_2739.method_11054(class_2739.java:12) at knot//net.minecraft.class_2600.method_11072(class_2600.java:27) at knot//net.minecraft.class_1255.method_18859(class_1255.java:162) at knot//net.minecraft.class_4093.method_18859(class_4093.java:23) at knot//net.minecraft.class_1255.method_16075(class_1255.java:136) at knot//net.minecraft.class_1255.method_5383(class_1255.java:121) at knot//net.minecraft.class_310.method_1523(class_310.java:1240) at knot//net.minecraft.class_310.method_1514(class_310.java:882) at knot//net.minecraft.client.main.Main.main(Main.java:256) at net.fabricmc.loader.impl.game.minecraft.MinecraftGameProvider.launch(MinecraftGameProvider.java:480) at net.fabricmc.loader.impl.launch.knot.Knot.launch(Knot.java:74) at net.fabricmc.loader.impl.launch.knot.KnotClient.main(KnotClient.java:23) A detailed walkthrough of the error, its code path and all known details is as follows: --------------------------------------------------------------------------------------- -- Head -- Thread: Render thread Stacktrace: at knot//net.minecraft.class_2945.method_12785(class_2945.java:126) at knot//net.minecraft.class_2945.method_12779(class_2945.java:117) -- Incoming Packet -- Details: Type: clientbound/minecraft:set_entity_data Is Terminal: false Is Skippable: false Stacktrace: at knot//net.minecraft.class_2600.method_59803(class_2600.java:56) at knot//net.minecraft.class_8673.method_60882(class_8673.java:136) at knot//net.minecraft.class_8673.method_59807(class_8673.java:113) at knot//net.minecraft.class_2600.method_11072(class_2600.java:32) at knot//net.minecraft.class_1255.method_18859(class_1255.java:162) at knot//net.minecraft.class_4093.method_18859(class_4093.java:23) at knot//net.minecraft.class_1255.method_16075(class_1255.java:136) at knot//net.minecraft.class_1255.method_5383(class_1255.java:121) at knot//net.minecraft.class_310.method_1523(class_310.java:1240) at knot//net.minecraft.class_310.method_1514(class_310.java:882) at knot//net.minecraft.client.main.Main.main(Main.java:256) at net.fabricmc.loader.impl.game.minecraft.MinecraftGameProvider.launch(MinecraftGameProvider.java:480) at net.fabricmc.loader.impl.launch.knot.Knot.launch(Knot.java:74) at net.fabricmc.loader.impl.launch.knot.KnotClient.main(KnotClient.java:23) -- Connection -- Details: Protocol: play Flow: CLIENTBOUND Server type: OTHER Server brand: fabric -- Cobblemon -- Details: Version: 1.6.1 Is Snapshot: false Git Commit: c66de51 (https://gitlab.com/cable-mc/cobblemon/-/commit/c66de51e39dd5144bde3550f630b58f67a835b65) Branch: HEAD -- System Details -- Details: Minecraft Version: 1.21.1 Minecraft Version ID: 1.21.1 Operating System: Windows 11 (amd64) version 10.0 Java Version: 21.0.3, Microsoft Java VM Version: OpenJDK 64-Bit Server VM (mixed mode), Microsoft Memory: 2344013800 bytes (2235 MiB) / 4294967296 bytes (4096 MiB) up to 4294967296 bytes (4096 MiB) CPUs: 8 Processor Vendor: AuthenticAMD Processor Name: AMD Ryzen 5 7235HS Identifier: AuthenticAMD Family 25 Model 68 Stepping 1 Microarchitecture: Zen 3 Frequency (GHz): 3.19 Number of physical packages: 1 Number of physical CPUs: 4 Number of logical CPUs: 8 Graphics card #0 name: NVIDIA GeForce RTX 3050 6GB Laptop GPU Graphics card #0 vendor: NVIDIA Graphics card #0 VRAM (MiB): 6144.00 Graphics card #0 deviceId: VideoController1 Graphics card #0 versionInfo: 32.0.15.6103 Memory slot #0 capacity (MiB): 12288.00 Memory slot #0 clockSpeed (GHz): 4.80 Memory slot #0 type: Unknown Virtual memory max (MiB): 23236.72 Virtual memory used (MiB): 18570.29 Swap memory total (MiB): 11264.00 Swap memory used (MiB): 405.87 Space in storage for jna.tmpdir (MiB): available: 39794.21, total: 486109.00 Space in storage for org.lwjgl.system.SharedLibraryExtractPath (MiB): available: 39794.21, total: 486109.00 Space in storage for io.netty.native.workdir (MiB): available: 39794.21, total: 486109.00 Space in storage for java.io.tmpdir (MiB): available: 39794.21, total: 486109.00 Space in storage for workdir (MiB): available: 39794.21, total: 486109.00 JVM Flags: 4 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xss1M -Xmx4096m -Xms256m Fabric Mods: architectury: Architectury 13.0.8 badgebox: Badge Box 1.0.0 cloth-config: Cloth Config v15 15.0.140 cloth-basic-math: cloth-basic-math 0.6.1 cobblebadges: CobbleBadges 3.0.0+Beta-3+1.21.1 cobblemon: Cobblemon 1.6.1+1.21.1 fabric-language-kotlin: Fabric Language Kotlin 1.11.0+kotlin.2.0.0 org_jetbrains_kotlin_kotlin-reflect: kotlin-reflect 2.0.0 org_jetbrains_kotlin_kotlin-stdlib: kotlin-stdlib 2.0.0 org_jetbrains_kotlin_kotlin-stdlib-jdk7: kotlin-stdlib-jdk7 2.0.0 org_jetbrains_kotlin_kotlin-stdlib-jdk8: kotlin-stdlib-jdk8 2.0.0 org_jetbrains_kotlinx_atomicfu-jvm: atomicfu-jvm 0.24.0 org_jetbrains_kotlinx_kotlinx-coroutines-core-jvm: kotlinx-coroutines-core-jvm 1.8.1 org_jetbrains_kotlinx_kotlinx-coroutines-jdk8: kotlinx-coroutines-jdk8 1.8.1 org_jetbrains_kotlinx_kotlinx-datetime-jvm: kotlinx-datetime-jvm 0.6.0 org_jetbrains_kotlinx_kotlinx-serialization-cbor-jvm: kotlinx-serialization-cbor-jvm 1.6.3 org_jetbrains_kotlinx_kotlinx-serialization-core-jvm: kotlinx-serialization-core-jvm 1.6.3 org_jetbrains_kotlinx_kotlinx-serialization-json-jvm: kotlinx-serialization-json-jvm 1.6.3 cobblemon-field-moves: Cobblemon Field Moves 1.6-fabric-1.0.0 cobblemon_fixedstarterivs: Cobblemon Fixed Starter IVs 1.6-fabric-1.0.0 cobblemon_unimplementeditems: Cobblemon Unimplemented Items 1.6-fabric-1.0.2 cobblemonboxlink: Cobblemon Box Link 1.0.3 cobblemonsizevariation: CobblemonSizeVariation 1.1.0 fabric-api: Fabric API 0.115.1+1.21.1 fabric-api-base: Fabric API Base 0.4.42+6573ed8c19 fabric-api-lookup-api-v1: Fabric API Lookup API (v1) 1.6.70+b559734419 fabric-biome-api-v1: Fabric Biome API (v1) 13.0.31+d527f9fd19 fabric-block-api-v1: Fabric Block API (v1) 1.0.22+0af3f5a719 fabric-block-view-api-v2: Fabric BlockView API (v2) 1.0.10+6573ed8c19 fabric-blockrenderlayer-v1: Fabric BlockRenderLayer Registration (v1) 1.1.52+0af3f5a719 fabric-client-tags-api-v1: Fabric Client Tags 1.1.15+6573ed8c19 fabric-command-api-v1: Fabric Command API (v1) 1.2.49+f71b366f19 fabric-command-api-v2: Fabric Command API (v2) 2.2.28+6ced4dd919 fabric-commands-v0: Fabric Commands (v0) 0.2.66+df3654b319 fabric-content-registries-v0: Fabric Content Registries (v0) 8.0.18+b559734419 fabric-convention-tags-v1: Fabric Convention Tags 2.1.3+7f945d5b19 fabric-convention-tags-v2: Fabric Convention Tags (v2) 2.10.0+9465b64419 fabric-crash-report-info-v1: Fabric Crash Report Info (v1) 0.2.29+0af3f5a719 fabric-data-attachment-api-v1: Fabric Data Attachment API (v1) 1.4.1+9ed317f519 fabric-data-generation-api-v1: Fabric Data Generation API (v1) 20.2.26+16c4ae2519 fabric-dimensions-v1: Fabric Dimensions API (v1) 4.0.0+6fc22b9919 fabric-entity-events-v1: Fabric Entity Events (v1) 1.7.0+2122d82819 fabric-events-interaction-v0: Fabric Events Interaction (v0) 0.7.13+ba9dae0619 fabric-game-rule-api-v1: Fabric Game Rule API (v1) 1.0.53+6ced4dd919 fabric-item-api-v1: Fabric Item API (v1) 11.1.1+d5debaed19 fabric-item-group-api-v1: Fabric Item Group API (v1) 4.1.6+6823f7cd19 fabric-key-binding-api-v1: Fabric Key Binding API (v1) 1.0.47+0af3f5a719 fabric-keybindings-v0: Fabric Key Bindings (v0) 0.2.45+df3654b319 fabric-lifecycle-events-v1: Fabric Lifecycle Events (v1) 2.5.0+01d9a51c19 fabric-loot-api-v2: Fabric Loot API (v2) 3.0.15+3f89f5a519 fabric-loot-api-v3: Fabric Loot API (v3) 1.0.3+3f89f5a519 fabric-message-api-v1: Fabric Message API (v1) 6.0.13+6573ed8c19 fabric-model-loading-api-v1: Fabric Model Loading API (v1) 2.0.0+fe474d6b19 fabric-networking-api-v1: Fabric Networking API (v1) 4.3.0+c7469b2119 fabric-object-builder-api-v1: Fabric Object Builder API (v1) 15.2.1+40875a9319 fabric-particles-v1: Fabric Particles (v1) 4.0.2+6573ed8c19 fabric-recipe-api-v1: Fabric Recipe API (v1) 5.0.14+248df81c19 fabric-registry-sync-v0: Fabric Registry Sync (v0) 5.2.0+34f5d91419 fabric-renderer-api-v1: Fabric Renderer API (v1) 3.4.0+c705a49c19 fabric-renderer-indigo: Fabric Renderer - Indigo 1.7.0+c705a49c19 fabric-renderer-registries-v1: Fabric Renderer Registries (v1) 3.2.68+df3654b319 fabric-rendering-data-attachment-v1: Fabric Rendering Data Attachment (v1) 0.3.48+73761d2e19 fabric-rendering-fluids-v1: Fabric Rendering Fluids (v1) 3.1.6+1daea21519 fabric-rendering-v0: Fabric Rendering (v0) 1.1.71+df3654b319 fabric-rendering-v1: Fabric Rendering (v1) 5.0.5+df16efd019 fabric-resource-conditions-api-v1: Fabric Resource Conditions API (v1) 4.3.0+8dc279b119 fabric-resource-loader-v0: Fabric Resource Loader (v0) 1.3.1+5b5275af19 fabric-screen-api-v1: Fabric Screen API (v1) 2.0.25+8b68f1c719 fabric-screen-handler-api-v1: Fabric Screen Handler API (v1) 1.3.88+b559734419 fabric-sound-api-v1: Fabric Sound API (v1) 1.0.23+6573ed8c19 fabric-transfer-api-v1: Fabric Transfer API (v1) 5.4.2+c24bd99419 fabric-transitive-access-wideners-v1: Fabric Transitive Access Wideners (v1) 6.2.0+45b9699719 fabricloader: Fabric Loader 0.16.10 mixinextras: MixinExtras 0.4.1 glitchcore: GlitchCore 2.1.0.0 com_electronwill_night-config_core: core 3.6.7 com_electronwill_night-config_toml: toml 3.6.7 net_jodah_typetools: typetools 0.6.3 jade: Jade 15.9.2+fabric java: OpenJDK 64-Bit Server VM 21 minecraft: Minecraft 1.21.1 mr_eggs_cobblemonaddon: Eggs - Cobblemon Addon 0.5 patchouli: Patchouli 1.21-87-FABRIC fiber: fiber 0.23.0-2 playeranimator: Player Animator 2.0.1+1.21.1 ranged_weapon_api: RangedWeaponAPI 2.0.5+1.21.1 rctapi: Radical Cobblemon Trainers API 0.10.12-beta releaserewards: Cobblemon: Parting Gifts 2.1.0 sereneseasons: SereneSeasons 10.1.0.3 show-held-items: Show Held Items 0.2.1 spark: spark 1.10.109 fabric-permissions-api-v0: fabric-permissions-api 0.3.1 spell_engine: Spell Engine 1.5.2+1.21.1 com_github_zsoltmolnarrr_tinyconfig: TinyConfig 2.3.2 spell_power: Spell Power Attribute 1.2.1+1.21.1 trinkets: Trinkets 3.10.0 cardinal-components-base: Cardinal Components API (base) 6.1.0 cardinal-components-entity: Cardinal Components API (entities) 6.1.0 xaerominimap: Xaero's Minimap 25.1.0

    :)
     
    bingusfarts, Mar 9, 2025
    #1
  2. Jonathan Deives Win User

    Minecraft Network Protocol Error

    Hi, my name is , I'm an Independent Consultant and a member of the Xbox community like you.

    Check if the error occurs in other versions, as you are trying to use mods, the best thing to do is contact the CurseForge forum where they can help you better.

    You can also try contacting Minecraft support;

    https://help.minecraft.net/hc/en-us/request/new...

    Or use the official discord at the bottom of the page;

    https://help.minecraft.net/hc/en-us
  3. SmartLace1968 Win User

    minecraft network protocol error 1.21.1

    Hi there! This is Virginia O.

    I understand that you are experiencing issues playing Minecraft.

    I apologize for the inconvenienced this has caused you. I will do my best to help you.

    Please verify Minecraft installation by launching Minecraft without mods to see if the issue persists. To do this, open Minecraft Launcher. Select the latest vanilla version (no mods). Start the game and check if the error still appears.

    And then check internet connection & server compatibility. Make sure that the server version matches Minecraft 1.21.1. Here are the steps, restart your router.

    Switch to a different Wi-Fi or mobile Hotspot. If using a VPN, disable it temporarily.

    If the issue persist after performing the troubleshooting steps, a clean installation is needed by uninstalling Minecraft Launcher. And then reinstall Minecraft from https://www.minecraft.net/en-us and try launching the game to see if it works.

    Thank you for your cooperation.
  4. SwordofWhedon Win User

    Network protocol

    You need to contact your Internet provider about problems with your Internet connection
  5. Alvaro A- Win User

    Unable to join minecraft for the reason "Network Protocol Error", playing on 1.21.1

    Hi william,

    Thank you for posting in Microsoft Xbox Community. I'm sorry to hear that you're having issues when playing Minecraft due to an error. I understand how important this is to you.

    I want to make sure that your issue will be resolved the soonest possible time. With this, I recommend that you submit a ticket directly to Minecraft support. In this way, we can be assured that your case will be logged, attended and monitored in a timely manner. Please use this link:

    https://help.minecraft.net/hc/en-us/request/new...

    Regards,

    Alvaro
  6. JohnSadler3 Win User

    , i try to connect my XBOX one by WIFI & get this ERROR:

    , i try to connect my XBOX one by WIFI & get this ERROR: "your security protocol will not work xbox one "Your console supports WPA/WPA2 (personal), WPA2 (personal), and WEP network security protocols, but your router is using something else.
    You'll need to change your routers configuration.""
Thema:

Minecraft Network Protocol Error

Loading...

  1. Minecraft Network Protocol Error - Similar Threads - Minecraft Network Protocol

  2. How do I re-enable Minecraft Multiplayer on my account when "cross-network play" and...

    in XBoX Games and Apps
    How do I re-enable Minecraft Multiplayer on my account when "cross-network play" and...: I used to be able to play Minecraft multiplayer, but after setting up Family Safety and adding two child accounts, I can no longer use multiplayer on my own account. I haven't restricted my own...

  3. I need help unlinking my PSN network account from my Minecraft account connected to Microsoft

    in XBoX on Windows
    I need help unlinking my PSN network account from my Minecraft account connected to Microsoft: Hello! First of all, I don't speak English, I'm using Google Translate, so forgive me if something goes wrong. So, I'm having a big problem connecting my Microsoft account to Minecraft so I can...

  4. Multi-player on Minecraft is no longer working on my child's switch. Could my Eero network...

    in XBoX Accessibility
    Multi-player on Minecraft is no longer working on my child's switch. Could my Eero network...: Hello, I have Frontier internet and when we switched to an Eero only mesh network (no other router), our Switch lost the ability to connect with friends via Multiplayer in Minecraft. I have done...

  5. minecraft network protocol error 1.21.1

    in XBoX Games and Apps
    minecraft network protocol error 1.21.1: ---- Minecraft Network Protocol Error Report ---- // 0xBADF00D Time: 2025-04-21 20:29:42 Description: Packet handling error java.lang.IllegalStateException: Failed to load registries due to...

  6. Minecraft 1.21.1 Network Protocol Error

    in XBoX Games and Apps
    Minecraft 1.21.1 Network Protocol Error: On minecraft 1.21.1 I am receiving a network protocol error on just one server that I am trying to play on. Every other server I'm in works fine, there is just a single server that is getting the...

  7. Connection issues relating to the Hive Network (Minecraft Bedrock)

    in XBoX on Consoles
    Connection issues relating to the Hive Network (Minecraft Bedrock): When I connect to the hive everything freezes for a few seconds speeds up and then goes back to normal except I now have ping spikes where I freeze for around half a second, and this would not be...

  8. cant connect to ps network on minecraft

    in XBoX Games and Apps
    cant connect to ps network on minecraft: İm a ps 5 player in the minecraft im trying to connect platststion network . im clicking the “sign in to playstation network” button but after im clicking that game says “signing into microsoft...

  9. Unable to join minecraft for the reason "Network Protocol Error", playing on 1.21.1

    in XBoX Games and Apps
    Unable to join minecraft for the reason "Network Protocol Error", playing on 1.21.1: Not really sure what to say here but i'll put the report, mainly wondering if someone can tell me what it means in stupid people terms and if its something to do with my mods because right below...

  10. Getting Network Protocol Error on Minecraft 1.21.1 with this Cobblemon server. Any help?

    in XBoX Games and Apps
    Getting Network Protocol Error on Minecraft 1.21.1 with this Cobblemon server. Any help?: ---- Minecraft Network Protocol Error Report ---- // Too many suspicious packets Time: 2025-01-25 17:33:26 Description: Packet handling error java.lang.IllegalStateException: Invalid entity data...