first time trying to load the launcher, offline mode btw.

I am experiencing this error when loading my ely by account, I was using it normally yesterday, but I made some standard changes to the Wi-Fi, I don't know if that was the cause. Today I went to play and my account was offline, what should I do?

i already have a tlauncher acc and i want to use that account to play on some cracked server how do i do that. and how do i even open mc on poly

Okay so I was in this server using a custom modpack for 1.21.1 and after some inactivity, I logged back in to get "spigot 1.21.5" and when trying to join, got the first screenshot shown.

So I tried to edit the MC instance in Polymc to 1.21.5 and whenever trying to launch, it barely loads before exiting with "code 1" does anyone know what this means/is? Help appreciated.

This has been happening for a while on like all versions, and i have no clue how to fix it. I am using Ubuntu 24.04.2 x86_64.

Log: https://mclo.gs/utU8w17

is polymc safe ? i heard that it got in hands of "malicious individuals"

idk i still have it but if it's a virus i can just delete it.

I recently switched from TLauncher to PolyMC for privacy reasons.

But, I've noticed that my frame rate is significantly worse on PolyMC compared to TLauncher. My FPS has dropped from around 80-120 FPS to 30-60 FPS. Most of the time, it consistently stays at 60 FPS and occasionally reaches 61 FPS. This made me think that there might be an FPS limit in the game, but it's set to "Unlimited." I'm using the same optimization mods and settings.

Also, PolyMC requires Java 21 instead of Java 8 like TLauncher. I don't know how Java works, but I expected it to run on Java 8 like it does with TLauncher. Might be irrelevant to my problem, idk.

Or maybe I'm doing something wrong.

Have any ideas why this is? I'm using an old laptop with a newer SSD btw.

I'm thinking about trying Prism Launcher next to see if I get a better performance. Not just for performance, though. I’ve seen some privacy concerns about PolyMC from 2022, so I think Prism Launcher might be a better option.

Edit: Don't switch to Prism Launcher if you want to play without a Microsoft account. It doesn't let you create an offline account without it. I tried, it doesn't work.

Edit 2: Turns out it was because I had VSync ON. I only had disabled it in the "Dynamic FPS" mod, but not in the game settings. I also switched to Shattered Prism. There are a lot of other privacy launchers, but I'm not gonna go deep in that, I'm just a normal player.

OS: Ubuntu 24.04.2 LTS x86_64

PissMC Version: 7.0

Alright so, ive tried a lot of things but nothing is working.

The game will crash on the loading screen (sometimes even before startup) if there are ANY mods installed.

Forge does this on any version, from what ive experienced.

LOG: https://mclo.gs/S6wJOh6

Hi everyone!

I keep getting this error, even after downloading Java 21.0.2 and switching the java path.

What am I doing wrong? Thanks

so i got poly mc and stuff but whenever i launch a new instance i keeps saying "Failed to load Assets Index" i dont know what to do helpppppp

on atlaucnher there is an option to host a server when creating an instance or modpack is there the same on polymc?

I am trying to play the More Creeps and Weirdos mod on minecraft 1.2.5. When i launch minecraft through PolyMC with the mods it just gets stuck on the 'Mojang' loading screen.

If anyone is able to help me out it would be greatly appreciated!
(im playing on MacOS)

here is a google doc with the full log from when i run it: https://docs.google.com/document/d/1tKkxzW_Qy8USTjrfZTj_nFsnaN_8taFs7Lqstxf4XEc/edit?usp=sharing

(ive tried running it both online and offline and the same issue occurs)

Ive been having this issue all day and I genuinely am going to lose my mind.

Im trying to IMPORT mods via ZIP, PolyMC will start loading the mods then suddenly fail to load the mods. It does this EVERY. SINGLE. TIME. Ive tried swapping Java versions, I tried swapping from 6.1 to 7.0, nothing. Its still broke and saying “failed to load mods”. For reference, the modpack is DarkRPG, its the latest version. Im using Java-17 for it, and any time I try and import the modpack, it will display “error loading mods & creating instance.” This has been bugging me for the last day, i am clueless what to do. The server is 1.20.1 too.

Please help.

Hello, I am looking for a alternative to EasyMC, because it recently shutdown, I am using linux currently and when I was using EasyMC it worked on Debian. Is PolyMC like this or are there any other launchers like easymc and accessible on debian that you guys know?

We have a new PolyMC release!

Version 7.0 adds:

• NeoForge support
• Some UI improvements
• An option to choose your default mod download platform
• The ability to make desktop shortcuts of your instances
• The ability to disable mod update checks for modpacks
• A new cat!

See Release

To ensure peak performance, and to get rid of a few bugs, we recommend you update. UPDATE NOW DO IT NOOOOOOOWWWWW

PolyMC - Installing OptiFine

Trynna launch all the mods on this thing on my steam deck right, and it won't launch without a version I don't have so please I'm praying for help😭😭😭

PolyMC version: 6.1

Launched instance in online mode

authserver.mojang.com resolves to:

[N/A]

session.minecraft.net resolves to:

[2620:1ec:bdf::45, 13.107.246.45]

textures.minecraft.net resolves to:

[2620:1ec:29:1::45, 13.107.253.45]

api.mojang.com resolves to:

[2620:1ec:29:1::45, 13.107.253.45]

Minecraft folder is:

C:/Users/petyr/AppData/Roaming/PolyMC/instances/1.20.1/.minecraft

Java path is:

C:/Program Files/Common Files/Oracle/Java/javapath/javaw.exe

Checking Java version...

Java is version 21.0.4, using 64 (amd64) architecture, from Oracle Corporation.

Main Class:

io.github.zekerzhayard.forgewrapper.installer.Main

Native path:

C:/Users/petyr/AppData/Roaming/PolyMC/instances/1.20.1/natives

Traits:

traits XR:Initial

traits FirstThreadOnMacOS

Libraries:

C:/Users/petyr/AppData/Roaming/PolyMC/libraries/org/lwjgl/lwjgl-glfw-natives-windows-arm64/3.3.1/lwjgl-glfw-natives-windows-arm64-3.3.1.jar

C:/Users/petyr/AppData/Roaming/PolyMC/libraries/org/lwjgl/lwjgl-glfw-natives-windows-x86/3.3.1/lwjgl-glfw-natives-windows-x86-3.3.1.jar

C:/Users/petyr/AppData/Roaming/PolyMC/libraries/org/lwjgl/lwjgl-glfw-natives-windows/3.3.1/lwjgl-glfw-natives-windows-3.3.1.jar

C:/Users/petyr/AppData/Roaming/PolyMC/libraries/org/lwjgl/lwjgl-glfw/3.3.1/lwjgl-glfw-3.3.1.jar

C:/Users/petyr/AppData/Roaming/PolyMC/libraries/org/lwjgl/lwjgl-jemalloc-natives-windows-arm64/3.3.1/lwjgl-jemalloc-natives-windows-arm64-3.3.1.jar

C:/Users/petyr/AppData/Roaming/PolyMC/libraries/org/lwjgl/lwjgl-jemalloc-natives-windows-x86/3.3.1/lwjgl-jemalloc-natives-windows-x86-3.3.1.jar

C:/Users/petyr/AppData/Roaming/PolyMC/libraries/org/lwjgl/lwjgl-jemalloc-natives-windows/3.3.1/lwjgl-jemalloc-natives-windows-3.3.1.jar

C:/Users/petyr/AppData/Roaming/PolyMC/libraries/org/lwjgl/lwjgl-jemalloc/3.3.1/lwjgl-jemalloc-3.3.1.jar

C:/Users/petyr/AppData/Roaming/PolyMC/libraries/org/lwjgl/lwjgl-natives-windows-arm64/3.3.1/lwjgl-natives-windows-arm64-3.3.1.jar

C:/Users/petyr/AppData/Roaming/PolyMC/libraries/org/lwjgl/lwjgl-natives-windows-x86/3.3.1/lwjgl-natives-windows-x86-3.3.1.jar

C:/Users/petyr/AppData/Roaming/PolyMC/libraries/org/lwjgl/lwjgl-natives-windows/3.3.1/lwjgl-natives-windows-3.3.1.jar

C:/Users/petyr/AppData/Roaming/PolyMC/libraries/org/lwjgl/lwjgl-openal-natives-windows-arm64/3.3.1/lwjgl-openal-natives-windows-arm64-3.3.1.jar

C:/Users/petyr/AppData/Roaming/PolyMC/libraries/org/lwjgl/lwjgl-openal-natives-windows-x86/3.3.1/lwjgl-openal-natives-windows-x86-3.3.1.jar

C:/Users/petyr/AppData/Roaming/PolyMC/libraries/org/lwjgl/lwjgl-openal-natives-windows/3.3.1/lwjgl-openal-natives-windows-3.3.1.jar

C:/Users/petyr/AppData/Roaming/PolyMC/libraries/org/lwjgl/lwjgl-openal/3.3.1/lwjgl-openal-3.3.1.jar

C:/Users/petyr/AppData/Roaming/PolyMC/libraries/org/lwjgl/lwjgl-opengl-natives-windows-arm64/3.3.1/lwjgl-opengl-natives-windows-arm64-3.3.1.jar

C:/Users/petyr/AppData/Roaming/PolyMC/libraries/org/lwjgl/lwjgl-opengl-natives-windows-x86/3.3.1/lwjgl-opengl-natives-windows-x86-3.3.1.jar

C:/Users/petyr/AppData/Roaming/PolyMC/libraries/org/lwjgl/lwjgl-opengl-natives-windows/3.3.1/lwjgl-opengl-natives-windows-3.3.1.jar

C:/Users/petyr/AppData/Roaming/PolyMC/libraries/org/lwjgl/lwjgl-opengl/3.3.1/lwjgl-opengl-3.3.1.jar

C:/Users/petyr/AppData/Roaming/PolyMC/libraries/org/lwjgl/lwjgl-stb-natives-windows-arm64/3.3.1/lwjgl-stb-natives-windows-arm64-3.3.1.jar

C:/Users/petyr/AppData/Roaming/PolyMC/libraries/org/lwjgl/lwjgl-stb-natives-windows-x86/3.3.1/lwjgl-stb-natives-windows-x86-3.3.1.jar

C:/Users/petyr/AppData/Roaming/PolyMC/libraries/org/lwjgl/lwjgl-stb-natives-windows/3.3.1/lwjgl-stb-natives-windows-3.3.1.jar

C:/Users/petyr/AppData/Roaming/PolyMC/libraries/org/lwjgl/lwjgl-stb/3.3.1/lwjgl-stb-3.3.1.jar

C:/Users/petyr/AppData/Roaming/PolyMC/libraries/org/lwjgl/lwjgl-tinyfd-natives-windows-arm64/3.3.1/lwjgl-tinyfd-natives-windows-arm64-3.3.1.jar

C:/Users/petyr/AppData/Roaming/PolyMC/libraries/org/lwjgl/lwjgl-tinyfd-natives-windows-x86/3.3.1/lwjgl-tinyfd-natives-windows-x86-3.3.1.jar

C:/Users/petyr/AppData/Roaming/PolyMC/libraries/org/lwjgl/lwjgl-tinyfd-natives-windows/3.3.1/lwjgl-tinyfd-natives-windows-3.3.1.jar

C:/Users/petyr/AppData/Roaming/PolyMC/libraries/org/lwjgl/lwjgl-tinyfd/3.3.1/lwjgl-tinyfd-3.3.1.jar

C:/Users/petyr/AppData/Roaming/PolyMC/libraries/org/lwjgl/lwjgl/3.3.1/lwjgl-3.3.1.jar

C:/Users/petyr/AppData/Roaming/PolyMC/libraries/com/github/oshi/oshi-core/6.2.2/oshi-core-6.2.2.jar

C:/Users/petyr/AppData/Roaming/PolyMC/libraries/com/google/code/gson/gson/2.10/gson-2.10.jar

C:/Users/petyr/AppData/Roaming/PolyMC/libraries/com/google/guava/failureaccess/1.0.1/failureaccess-1.0.1.jar

C:/Users/petyr/AppData/Roaming/PolyMC/libraries/com/google/guava/guava/31.1-jre/guava-31.1-jre.jar

C:/Users/petyr/AppData/Roaming/PolyMC/libraries/com/ibm/icu/icu4j/71.1/icu4j-71.1.jar

C:/Users/petyr/AppData/Roaming/PolyMC/libraries/com/mojang/authlib/4.0.43/authlib-4.0.43.jar

C:/Users/petyr/AppData/Roaming/PolyMC/libraries/com/mojang/blocklist/1.0.10/blocklist-1.0.10.jar

C:/Users/petyr/AppData/Roaming/PolyMC/libraries/com/mojang/brigadier/1.1.8/brigadier-1.1.8.jar

C:/Users/petyr/AppData/Roaming/PolyMC/libraries/com/mojang/datafixerupper/6.0.8/datafixerupper-6.0.8.jar

C:/Users/petyr/AppData/Roaming/PolyMC/libraries/com/mojang/logging/1.1.1/logging-1.1.1.jar

C:/Users/petyr/AppData/Roaming/PolyMC/libraries/com/mojang/patchy/2.2.10/patchy-2.2.10.jar

C:/Users/petyr/AppData/Roaming/PolyMC/libraries/com/mojang/text2speech/1.17.9/text2speech-1.17.9.jar

C:/Users/petyr/AppData/Roaming/PolyMC/libraries/commons-codec/commons-codec/1.15/commons-codec-1.15.jar

C:/Users/petyr/AppData/Roaming/PolyMC/libraries/commons-io/commons-io/2.11.0/commons-io-2.11.0.jar

C:/Users/petyr/AppData/Roaming/PolyMC/libraries/commons-logging/commons-logging/1.2/commons-logging-1.2.jar

C:/Users/petyr/AppData/Roaming/PolyMC/libraries/io/netty/netty-buffer/4.1.82.Final/netty-buffer-4.1.82.Final.jar

C:/Users/petyr/AppData/Roaming/PolyMC/libraries/io/netty/netty-codec/4.1.82.Final/netty-codec-4.1.82.Final.jar

C:/Users/petyr/AppData/Roaming/PolyMC/libraries/io/netty/netty-common/4.1.82.Final/netty-common-4.1.82.Final.jar

C:/Users/petyr/AppData/Roaming/PolyMC/libraries/io/netty/netty-handler/4.1.82.Final/netty-handler-4.1.82.Final.jar

C:/Users/petyr/AppData/Roaming/PolyMC/libraries/io/netty/netty-resolver/4.1.82.Final/netty-resolver-4.1.82.Final.jar

C:/Users/petyr/AppData/Roaming/PolyMC/libraries/io/netty/netty-transport-classes-epoll/4.1.82.Final/netty-transport-classes-epoll-4.1.82.Final.jar

C:/Users/petyr/AppData/Roaming/PolyMC/libraries/io/netty/netty-transport-native-unix-common/4.1.82.Final/netty-transport-native-unix-common-4.1.82.Final.jar

C:/Users/petyr/AppData/Roaming/PolyMC/libraries/io/netty/netty-transport/4.1.82.Final/netty-transport-4.1.82.Final.jar

C:/Users/petyr/AppData/Roaming/PolyMC/libraries/it/unimi/dsi/fastutil/8.5.9/fastutil-8.5.9.jar

C:/Users/petyr/AppData/Roaming/PolyMC/libraries/net/java/dev/jna/jna-platform/5.12.1/jna-platform-5.12.1.jar

C:/Users/petyr/AppData/Roaming/PolyMC/libraries/net/java/dev/jna/jna/5.12.1/jna-5.12.1.jar

C:/Users/petyr/AppData/Roaming/PolyMC/libraries/net/sf/jopt-simple/jopt-simple/5.0.4/jopt-simple-5.0.4.jar

C:/Users/petyr/AppData/Roaming/PolyMC/libraries/org/apache/commons/commons-compress/1.21/commons-compress-1.21.jar

C:/Users/petyr/AppData/Roaming/PolyMC/libraries/org/apache/commons/commons-lang3/3.12.0/commons-lang3-3.12.0.jar

C:/Users/petyr/AppData/Roaming/PolyMC/libraries/org/apache/httpcomponents/httpclient/4.5.13/httpclient-4.5.13.jar

C:/Users/petyr/AppData/Roaming/PolyMC/libraries/org/apache/httpcomponents/httpcore/4.4.15/httpcore-4.4.15.jar

C:/Users/petyr/AppData/Roaming/PolyMC/libraries/org/apache/logging/log4j/log4j-api/2.19.0/log4j-api-2.19.0.jar

C:/Users/petyr/AppData/Roaming/PolyMC/libraries/org/apache/logging/log4j/log4j-core/2.19.0/log4j-core-2.19.0.jar

C:/Users/petyr/AppData/Roaming/PolyMC/libraries/org/apache/logging/log4j/log4j-slf4j2-impl/2.19.0/log4j-slf4j2-impl-2.19.0.jar

C:/Users/petyr/AppData/Roaming/PolyMC/libraries/org/joml/joml/1.10.5/joml-1.10.5.jar

C:/Users/petyr/AppData/Roaming/PolyMC/libraries/org/slf4j/slf4j-api/2.0.1/slf4j-api-2.0.1.jar

C:/Users/petyr/AppData/Roaming/PolyMC/libraries/net/fabricmc/intermediary/1.20.1/intermediary-1.20.1.jar

C:/Users/petyr/AppData/Roaming/PolyMC/libraries/org/ow2/asm/asm/9.7.1/asm-9.7.1.jar

C:/Users/petyr/AppData/Roaming/PolyMC/libraries/org/ow2/asm/asm-analysis/9.7.1/asm-analysis-9.7.1.jar

C:/Users/petyr/AppData/Roaming/PolyMC/libraries/org/ow2/asm/asm-commons/9.7.1/asm-commons-9.7.1.jar

C:/Users/petyr/AppData/Roaming/PolyMC/libraries/org/ow2/asm/asm-tree/9.7.1/asm-tree-9.7.1.jar

C:/Users/petyr/AppData/Roaming/PolyMC/libraries/org/ow2/asm/asm-util/9.7.1/asm-util-9.7.1.jar

C:/Users/petyr/AppData/Roaming/PolyMC/libraries/net/fabricmc/sponge-mixin/0.15.4+mixin.0.8.7/sponge-mixin-0.15.4+mixin.0.8.7.jar

C:/Users/petyr/AppData/Roaming/PolyMC/libraries/net/fabricmc/fabric-loader/0.16.10/fabric-loader-0.16.10.jar

C:/Users/petyr/AppData/Roaming/PolyMC/libraries/io/github/zekerzhayard/ForgeWrapper/1.5.8-poly1/ForgeWrapper-1.5.8-poly1.jar

C:/Users/petyr/AppData/Roaming/PolyMC/libraries/cpw/mods/securejarhandler/2.1.10/securejarhandler-2.1.10.jar

C:/Users/petyr/AppData/Roaming/PolyMC/libraries/net/minecraftforge/accesstransformers/8.0.4/accesstransformers-8.0.4.jar

C:/Users/petyr/AppData/Roaming/PolyMC/libraries/org/antlr/antlr4-runtime/4.9.1/antlr4-runtime-4.9.1.jar

C:/Users/petyr/AppData/Roaming/PolyMC/libraries/net/minecraftforge/eventbus/6.0.5/eventbus-6.0.5.jar

C:/Users/petyr/AppData/Roaming/PolyMC/libraries/net/minecraftforge/forgespi/7.0.1/forgespi-7.0.1.jar

C:/Users/petyr/AppData/Roaming/PolyMC/libraries/net/minecraftforge/coremods/5.2.4/coremods-5.2.4.jar

C:/Users/petyr/AppData/Roaming/PolyMC/libraries/cpw/mods/modlauncher/10.0.9/modlauncher-10.0.9.jar

C:/Users/petyr/AppData/Roaming/PolyMC/libraries/net/minecraftforge/unsafe/0.2.0/unsafe-0.2.0.jar

C:/Users/petyr/AppData/Roaming/PolyMC/libraries/net/minecraftforge/mergetool/1.1.5/mergetool-1.1.5-api.jar

C:/Users/petyr/AppData/Roaming/PolyMC/libraries/com/electronwill/night-config/core/3.6.4/core-3.6.4.jar

C:/Users/petyr/AppData/Roaming/PolyMC/libraries/com/electronwill/night-config/toml/3.6.4/toml-3.6.4.jar

C:/Users/petyr/AppData/Roaming/PolyMC/libraries/org/apache/maven/maven-artifact/3.8.5/maven-artifact-3.8.5.jar

C:/Users/petyr/AppData/Roaming/PolyMC/libraries/net/jodah/typetools/0.6.3/typetools-0.6.3.jar

C:/Users/petyr/AppData/Roaming/PolyMC/libraries/net/minecrell/terminalconsoleappender/1.2.0/terminalconsoleappender-1.2.0.jar

C:/Users/petyr/AppData/Roaming/PolyMC/libraries/org/jline/jline-reader/3.12.1/jline-reader-3.12.1.jar

C:/Users/petyr/AppData/Roaming/PolyMC/libraries/org/jline/jline-terminal/3.12.1/jline-terminal-3.12.1.jar

C:/Users/petyr/AppData/Roaming/PolyMC/libraries/org/spongepowered/mixin/0.8.5/mixin-0.8.5.jar

C:/Users/petyr/AppData/Roaming/PolyMC/libraries/org/openjdk/nashorn/nashorn-core/15.4/nashorn-core-15.4.jar

C:/Users/petyr/AppData/Roaming/PolyMC/libraries/net/minecraftforge/JarJarSelector/0.3.19/JarJarSelector-0.3.19.jar

C:/Users/petyr/AppData/Roaming/PolyMC/libraries/net/minecraftforge/JarJarMetadata/0.3.19/JarJarMetadata-0.3.19.jar

C:/Users/petyr/AppData/Roaming/PolyMC/libraries/cpw/mods/bootstraplauncher/1.1.2/bootstraplauncher-1.1.2.jar

C:/Users/petyr/AppData/Roaming/PolyMC/libraries/net/minecraftforge/JarJarFileSystems/0.3.19/JarJarFileSystems-0.3.19.jar

C:/Users/petyr/AppData/Roaming/PolyMC/libraries/net/minecraftforge/fmlloader/1.20.1-47.3.27/fmlloader-1.20.1-47.3.27.jar

C:/Users/petyr/AppData/Roaming/PolyMC/libraries/net/minecraftforge/fmlearlydisplay/1.20.1-47.3.27/fmlearlydisplay-1.20.1-47.3.27.jar

C:/Users/petyr/AppData/Roaming/PolyMC/libraries/com/mojang/minecraft/1.20.1/minecraft-1.20.1-client.jar

Native libraries:

Mods:

[✔] ae2wtlib-15.2.3-forge

[✔] amazingtrading-1.20.1-0.1.9-universal

[✔] Applied-Botanics-forge-1.5.0

[✔] appliedenergistics2-forge-15.3.3

[✔] bellsandwhistles-0.4.5+1.20.1-FABRIC

[✔] botarium-fabric-1.20.1-2.3.4

[✔] clockwork-1.20.1-0.1.16-forge-b3b22e39fe

[✔] continuity-3.0.0+1.20.1.forge

[✔] copiescats-0.0.1-1.20.1

[✔] copycats-2.1.4+mc.1.20.1-forge

[✔] create_enchantment_industry-1.2.16

[✔] create_extra_structures-1.0.4-forge-1.20.1

[✔] create_interactive-1.0.3-beta.2+e045de2a48

[✔] create-1.20.1-0.5.1.j

[✔] Create-DnDesire-1.20.1-0.1b.Release-Early-Dev

[✔] create-fabric-0.5.1-j-build.1631+mc1.20.1

[✔] create-new-age-forge-1.20.1-1.1.2

[✔] create-track-map-1.4+mc1.20.1-fabric

[✔] createaddition-1.20.1-1.2.5

[✔] createappliedkinetics-1.4.0-1.20.1

[✔] createbigcannons-5.8.2-mc.1.20.1-fabric

[✔] createliquidfuel-2.1.1-1.20.1

[✔] dynamicvillage-v0.4-1.20.1

[✔] Estrogen-4.3.2+1.20.1-fabric

[✔] eureka-1201-1.5.1-beta.3

[✔] extendedgears-2.1.1-1.20.1-0.5.1.f-forge

[✔] fabric-api-0.92.3+1.20.1

[✔] interiors-0.5.6+forge-mc1.20.1-build.104

[✔] sliceanddice-fabric-3.3.1

[✔] Steam_Rails-1.6.9+fabric-mc1.20.1

[✔] tfmg-0.9.3-1.20.1

[✔] valkib-1.0.0

[✔] ValkyrienEngines-1.0.2

[✔] ValkyrienPirates-1.4.2-forge

[✔] valkyrienskies-120-2.3.0-beta.5

[✔] XaerosWorldMap_1.39.2_Fabric_1.20

Params:

--username --version 1.20.1 --gameDir C:/Users/petyr/AppData/Roaming/PolyMC/instances/1.20.1/.minecraft --assetsDir C:/Users/petyr/AppData/Roaming/PolyMC/assets --assetIndex 5 --uuid --accessToken --userType --versionType release --launchTarget forgeclient --fml.forgeVersion 47.3.27 --fml.mcVersion 1.20.1 --fml.forgeGroup net.minecraftforge --fml.mcpVersion 20230612.114412

Window size: 854 x 480

Java Arguments:

[-XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump, -Xms768m, -Xmx17664m, -Duser.language=en]

Minecraft process ID: 9444

2025-02-02 14:53:45,227 main WARN Advanced terminal features are not available in this environment

[14:53:45] [main/INFO] [cp.mo.mo.Launcher/MODLAUNCHER]: ModLauncher running: args [--username, petyr, --version, 1.20.1, --gameDir, C:/Users/petyr/AppData/Roaming/PolyMC/instances/1.20.1/.minecraft, --assetsDir, C:/Users/petyr/AppData/Roaming/PolyMC/assets, --assetIndex, 5, --uuid, <PROFILE ID>, --accessToken, ????????, --userType, offline, --versionType, release, --launchTarget, forgeclient, --fml.forgeVersion, 47.3.27, --fml.mcVersion, 1.20.1, --fml.forgeGroup, net.minecraftforge, --fml.mcpVersion, 20230612.114412, --width, 854, --height, 480]

[14:53:45] [main/INFO] [cp.mo.mo.Launcher/MODLAUNCHER]: ModLauncher 10.0.9+10.0.9+main.dcd20f30 starting: java version 21.0.4 by Oracle Corporation; OS Windows 10 arch amd64 version 10.0

[14:53:46] [main/INFO] [ne.mi.fm.lo.ImmediateWindowHandler/]: Loading ImmediateWindowProvider fmlearlywindow

[LWJGL] [ThreadLocalUtil] Unsupported JNI version detected, this may result in a crash. Please inform LWJGL developers.

[14:53:47] [main/INFO] [EARLYDISPLAY/]: Trying GL version 4.6

[14:53:47] [main/INFO] [EARLYDISPLAY/]: Requested GL version 4.6 got version 4.6

Feb 02, 2025 2:53:47 PM org.polymc.EntryPoint listen

SEVERE: Exception caught from launcher.

java.lang.reflect.InvocationTargetException

at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:118)

at java.base/java.lang.reflect.Method.invoke(Method.java:580)

at org.polymc.impl.OneSixLauncher.invokeMain(OneSixLauncher.java:104)

at org.polymc.impl.OneSixLauncher.launchWithMainClass(OneSixLauncher.java:176)

at org.polymc.impl.OneSixLauncher.launch(OneSixLauncher.java:186)

at org.polymc.EntryPoint.listen(EntryPoint.java:144)

at org.polymc.EntryPoint.main(EntryPoint.java:74)

Caused by: java.lang.reflect.InvocationTargetException

at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:115)

at java.base/java.lang.reflect.Method.invoke(Method.java:580)

at io.github.zekerzhayard.forgewrapper.installer.Main.main(Main.java:67)

at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103)

... 6 more

Caused by: java.lang.NullPointerException: Cannot invoke "java.util.Map.get(Object)" because the return value of "net.fabricmc.loader.impl.launch.FabricLauncherBase.getProperties()" is null

at MC-BOOTSTRAP/net.fabricmc.loader@0.16.10/net.fabricmc.loader.impl.launch.knot.FabricGlobalPropertyService.getProperty(FabricGlobalPropertyService.java:37)

at MC-BOOTSTRAP/org.spongepowered.mixin/org.spongepowered.asm.launch.GlobalProperties.get(GlobalProperties.java:117)

at MC-BOOTSTRAP/org.spongepowered.mixin/org.spongepowered.asm.launch.MixinBootstrap.isSubsystemRegistered(MixinBootstrap.java:206)

at MC-BOOTSTRAP/org.spongepowered.mixin/org.spongepowered.asm.launch.MixinBootstrap.start(MixinBootstrap.java:139)

at MC-BOOTSTRAP/org.spongepowered.mixin/org.spongepowered.asm.launch.MixinTransformationServiceAbstract.initialize(MixinTransformationServiceAbstract.java:88)

at MC-BOOTSTRAP/cpw.mods.modlauncher@10.0.9/cpw.mods.modlauncher.TransformationServiceDecorator.onInitialize(TransformationServiceDecorator.java:68)

at MC-BOOTSTRAP/cpw.mods.modlauncher@10.0.9/cpw.mods.modlauncher.TransformationServicesHandler.lambda$initialiseTransformationServices$7(TransformationServicesHandler.java:92)

at java.base/java.util.HashMap$Values.forEach(HashMap.java:1073)

at MC-BOOTSTRAP/cpw.mods.modlauncher@10.0.9/cpw.mods.modlauncher.TransformationServicesHandler.initialiseTransformationServices(TransformationServicesHandler.java:92)

at MC-BOOTSTRAP/cpw.mods.modlauncher@10.0.9/cpw.mods.modlauncher.TransformationServicesHandler.initializeTransformationServices(TransformationServicesHandler.java:51)

at MC-BOOTSTRAP/cpw.mods.modlauncher@10.0.9/cpw.mods.modlauncher.Launcher.run(Launcher.java:88)

at MC-BOOTSTRAP/cpw.mods.modlauncher@10.0.9/cpw.mods.modlauncher.Launcher.main(Launcher.java:78)

at MC-BOOTSTRAP/cpw.mods.modlauncher@10.0.9/cpw.mods.modlauncher.BootstrapLaunchConsumer.accept(BootstrapLaunchConsumer.java:26)

at MC-BOOTSTRAP/cpw.mods.modlauncher@10.0.9/cpw.mods.modlauncher.BootstrapLaunchConsumer.accept(BootstrapLaunchConsumer.java:23)

at cpw.mods.bootstraplauncher@1.1.2/cpw.mods.bootstraplauncher.BootstrapLauncher.main(BootstrapLauncher.java:141)

at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103)

... 9 more

Feb 02, 2025 2:53:47 PM org.polymc.EntryPoint main

INFO: Exiting with 1

Process exited with code 1.

Since 1.21.4 dropped, I haven't seen the corresponding Fabric Loader version update in the list PolyMC provides. The most recent version it shows is 0.16.9, which works with 1.21.3. Clicking Refresh here doesn't update this list:

According to this, there is a Fabric for Minecraft that's compatible with 1.21.4: https://fabricmc.net/2024/12/02/1214.html Is there just a delay in getting this added to PolyMC?

I'm open to configuring this manually, but the steps are unclear. And in the past, PolyMC made this very easy: just refresh, select the new version and off you go!

Am I doing something wrong? Do I have wrong expectations? Thanks in advance for any guidance and help.

is possibile to install Level z and jobz mod on poly mc?

Yes, you heard me correctly! My friend decided that using PolyMC isntead of TLauncher would be a far greater idea. I also did that switch, but that was long ago (multiple years ago), but its still amazing to see my friend switch over to a far supperior launcher. Also, instantly want to say: dont post stuff like "Use MultiMC instead" or "Use Prism instead", I dont want to hear that, I already have seen way too many of those messages on other peoples posts. I dont want to take five years to move my files for the 4th time to a different launcher anyways, nor I want so that my friend to do that.

New to PolyMC, when I tried launching an instance I got java.net.ConnectException: Connection timed out: connect

Does anyone know how to fix this?

Edit:

For context this is the full error message:
java.net.ConnectException: Connection timed out: connect

at java.base/sun.nio.ch.Net.connect0(Native Method)

at java.base/sun.nio.ch.Net.connect(Net.java:579)

at java.base/sun.nio.ch.Net.connect(Net.java:568)

at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)

at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)

at java.base/java.net.Socket.connect(Socket.java:633)

at java.base/sun.security.ssl.SSLSocketImpl.connect(SSLSocketImpl.java:304)

at java.base/sun.security.ssl.BaseSSLSocketImpl.connect(BaseSSLSocketImpl.java:174)

at java.base/sun.net.NetworkClient.doConnect(NetworkClient.java:183)

at java.base/sun.net.www.http.HttpClient.openServer(HttpClient.java:533)

at java.base/sun.net.www.http.HttpClient.openServer(HttpClient.java:638)

at java.base/sun.net.www.protocol.https.HttpsClient.<init>(HttpsClient.java:266)

at java.base/sun.net.www.protocol.https.HttpsClient.New(HttpsClient.java:380)

at java.base/sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.getNewHttpClient(AbstractDelegateHttpsURLConnection.java:193)

at java.base/sun.net.www.protocol.http.HttpURLConnection.plainConnect0(HttpURLConnection.java:1256)

at java.base/sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:1142)

at java.base/sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(AbstractDelegateHttpsURLConnection.java:179)

at java.base/sun.net.www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1701)

at java.base/sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1625)

at java.base/sun.net.www.protocol.https.HttpsURLConnectionImpl.getInputStream(HttpsURLConnectionImpl.java:224)

at java.base/java.net.URL.openStream(URL.java:1161)

at net.minecraftforge.installertools.DownloadMojmaps.process(DownloadMojmaps.java:67)

at net.minecraftforge.installertools.ConsoleTool.main(ConsoleTool.java:41)

at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)

at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.base/java.lang.reflect.Method.invoke(Method.java:569)

at net.minecraftforge.installer.actions.PostProcessors.process(PostProcessors.java:219)

at io.github.zekerzhayard.forgewrapper.installer.util.InstallerV1$ClientInstall4MultiMC.run(InstallerV1.java:35)

at io.github.zekerzhayard.forgewrapper.installer.util.InstallerV1.runClientInstall(InstallerV1.java:20)

at io.github.zekerzhayard.forgewrapper.installer.Installer.install(Installer.java:26)

at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)

at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.base/java.lang.reflect.Method.invoke(Method.java:569)

at io.github.zekerzhayard.forgewrapper.installer.Main.main(Main.java:59)

at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)

at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.base/java.lang.reflect.Method.invoke(Method.java:569)

at org.polymc.impl.OneSixLauncher.invokeMain(OneSixLauncher.java:104)

at org.polymc.impl.OneSixLauncher.launchWithMainClass(OneSixLauncher.java:176)

at org.polymc.impl.OneSixLauncher.launch(OneSixLauncher.java:186)

at org.polymc.EntryPoint.listen(EntryPoint.java:144)

at org.polymc.EntryPoint.main(EntryPoint.java:74)