Can you install wurst on forge.

plague_doctor_plushie

I was wondering because i want to use wurst on my friends server but its only on forge

Alexander01998

UPDATE: How to use Wurst with NeoForge

NeoForge 1.21.1

Add the latest Wurst version for Minecraft 1.21.1 to your mods folder (link)
Don't add Fabric API
Instead, add the latest Forgified Fabric API for 1.21.1 (link)
Add Sinytra Connector for 1.21.1 (link, pick the latest version that isn't beta.11 or beta.12)
Install NeoForge (no need to install Fabric)

Forge/NeoForge 1.20.1

Add the latest Wurst version for Minecraft 1.20.1 to your mods folder (link)
Don't add Fabric API
Instead, add the latest Forgified Fabric API for 1.20.1 (link) (it says Forge, but works with NeoForge too)
Add Sinytra Connector for 1.20.1 (link) (it says Forge, but works with NeoForge too)
Install either Forge or NeoForge (no need to install Fabric)

Important: If you find older forum posts telling you to downgrade Wurst, Forgified Fabric API, or Sodium, ignore that advice! Those compatibility issues have been fixed and the latest versions work fine now.

Also Important: Sinytra Connector versions 2.0.0-beta.11+1.21.1 and 2.0.0-beta.12+1.21.1 are super broken. For now, you can fix this by downgrading to version 2.0.0-beta.10+1.21.1. https://modrinth.com/mod/connector/version/2.0.0-beta.10+1.21.1

For anyone reading this far in the future, if there is a beta.13 or higher version of Connector, try that first before downgrading anything! Check here to see if that exists.

Original reply:

Hey plague_doctor_plushie,

Wurst can work with Forge, but it depends on the version of Forge you're using. Here's how you can go about it:

Forge 1.20.1: If your friend's server is running on Forge 1.20.1, you can use Wurst by installing the Sinytra Connector mod as well as Forgified Fabric API. Once you've installed those, you just need to drop the Wurst jar file into the mods folder along with those mods.
Forge 1.12.2 or 1.10.2: For servers running these Forge versions, you can use ForgeWurst. Just download the correct version for your setup and drop it in the mods folder.

If the server is running on any other version of Forge, unfortunately Wurst won't work as it's only Forge-compatible in these specific versions.

Hope this helps!

Alexander01998

Hi _3010, see my reply above: Alexander01998 under the "NeoForge 1.21.1" section.

mathgc_010

Está dando erro na forge 1.20.1
Erro: [15:35:40] [main/INFO]:[java.lang.Throwable:printStackTrace:659]: at TRANSFORMER/minecraft@1.20.1/net.minecraft.server.Bootstrap.m_135889_(Bootstrap.java)

[15:35:40] [main/INFO]:[java.lang.Throwable:printStackTrace:659]: at TRANSFORMER/minecraft@1.20.1/net.minecraft.client.main.Main.main(Main.java:152)

[15:35:40] [main/INFO]:[java.lang.Throwable:printStackTrace:659]: ... 15 more

[15:35:40] [main/INFO]:[java.lang.Throwable:printStackTrace:682]: Caused by: org.spongepowered.asm.mixin.throwables.MixinApplyError: Mixin [securitycraft.mixins.json:camera.GameRendererMixin from mod securitycraft] from phase [DEFAULT] in config [securitycraft.mixins.json] FAILED during APPLY

[15:35:40] [main/INFO]:[java.lang.Throwable:printStackTrace:682]: at MC-BOOTSTRAP/org.spongepowered.mixin/org.spongepowered.asm.mixin.transformer.MixinProcessor.handleMixinError(MixinProcessor.java:638)

[15:35:40] [main/INFO]:[java.lang.Throwable:printStackTrace:682]: at MC-BOOTSTRAP/org.spongepowered.mixin/org.spongepowered.asm.mixin.transformer.MixinProcessor.applyMixins(MixinProcessor.java:379)

[15:35:40] [main/INFO]:[java.lang.Throwable:printStackTrace:682]: ... 32 more

[15:35:40] [main/INFO]:[java.lang.Throwable:printEnclosedStackTrace:724]: Caused by: org.spongepowered.asm.mixin.injection.throwables.InvalidInjectionException: Variable modifier target for net/minecraft/client/renderer/GameRenderer::securitycraft$disableFeedDistortion was removed by another injector [INJECT Applicator Phase -> securitycraft.mixins.json:camera.GameRendererMixin from mod securitycraft -> Apply Injections -> -> Inject -> securitycraft.mixins.json:camera.GameRendererMixin from mod securitycraft->@ModifyVariable::securitycraft$disableFeedDistortion(F)F]

[15:35:40] [main/INFO]:[java.lang.Throwable:printEnclosedStackTrace:724]: at MC-BOOTSTRAP/org.spongepowered.mixin/org.spongepowered.asm.mixin.injection.modify.ModifyVariableInjector.inject(ModifyVariableInjector.java:169)

[15:35:40] [main/INFO]:[java.lang.Throwable:printEnclosedStackTrace:724]: at MC-BOOTSTRAP/org.spongepowered.mixin/org.spongepowered.asm.mixin.injection.code.Injector.inject(Injector.java:276)

[15:35:40] [main/INFO]:[java.lang.Throwable:printEnclosedStackTrace:724]: at MC-BOOTSTRAP/org.spongepowered.mixin/org.spongepowered.asm.mixin.injection.struct.InjectionInfo.inject(InjectionInfo.java:445)

[15:35:40] [main/INFO]:[java.lang.Throwable:printEnclosedStackTrace:724]: at MC-BOOTSTRAP/org.spongepowered.mixin/org.spongepowered.asm.mixin.transformer.MixinTargetContext.applyInjections(MixinTargetContext.java:1377)

[15:35:40] [main/INFO]:[java.lang.Throwable:printEnclosedStackTrace:724]: at MC-BOOTSTRAP/org.spongepowered.mixin/org.spongepowered.asm.mixin.transformer.MixinApplicatorStandard.applyInjections(MixinApplicatorStandard.java:1062)

[15:35:40] [main/INFO]:[java.lang.Throwable:printEnclosedStackTrace:724]: at MC-BOOTSTRAP/org.spongepowered.mixin/org.spongepowered.asm.mixin.transformer.MixinApplicatorStandard.applyMixin(MixinApplicatorStandard.java:402)

[15:35:40] [main/INFO]:[java.lang.Throwable:printEnclosedStackTrace:724]: at MC-BOOTSTRAP/org.spongepowered.mixin/org.spongepowered.asm.mixin.transformer.MixinApplicatorStandard.apply(MixinApplicatorStandard.java:327)

[15:35:40] [main/INFO]:[java.lang.Throwable:printEnclosedStackTrace:724]: at MC-BOOTSTRAP/org.spongepowered.mixin/org.spongepowered.asm.mixin.transformer.TargetClassContext.apply(TargetClassContext.java:421)

[15:35:40] [main/INFO]:[java.lang.Throwable:printEnclosedStackTrace:724]: at MC-BOOTSTRAP/org.spongepowered.mixin/org.spongepowered.asm.mixin.transformer.TargetClassContext.applyMixins(TargetClassContext.java:403)

[15:35:40] [main/INFO]:[java.lang.Throwable:printEnclosedStackTrace:724]: ... 32 more

Alexander01998

Hi mathgc_010, please note that this is an English-only forum.
Your crash was caused by a mod called SecurityCraft and appears to be unrelated to Wurst.
You can find SecurityCraft's issue tracker here: Geforce132/SecurityCraftissues
Hope this helps!

mathgc_010

Hi, sorry for using Portuguese.. The error seems to be from Wurst since without it Minecraft opens normally..

Alexander01998

mathgc_010 OK, I've looked into this again and found that it's a mixin conflict between the 1.20.1 versions of Wurst and SecurityCraft. These mixins have already been updated on both sides in later Minecraft versions (1.20.5 and up).

Since Minecraft 1.20.1 is over two years old and over 90% of players have moved on from it, that version is unfortunately no longer receiving Wurst updates, so the issue won't be fixed in that version. However, if you update to a newer version of Minecraft (e.g. 1.20.5, 1.20.6, 1.21.1, or any later version), then you'll find that the issue has already been fixed there.

Alternatively, if you insist on staying on Minecraft 1.20.1, you can work around the issue by removing either Wurst or SecurityCraft from your mods folder. You won't be able to use them both in 1.20.1, but choosing one or the other would still work.

Hope this helps!

maki_suzuhara

Hi Alexander01998 ,
I am currently trying to run Wurst Client (v7.51.2) on Minecraft 1.21.1 using NeoForge (21.1.219) and Sinytra Connector. However, the game crashes during the initialization phase with a MixinTransformerError.

Specifically, the logs show a critical injection failure in wurst.mixins.json:BlockModelRendererMixin regarding the onRenderSmoothOrFlat method. It seems no refMap was loaded during this process.

Is there a known workaround to get Wurst working in this specific environment, or is the client currently incompatible with Sinytra Connector on 1.21.1? Thank you for your help!

crash-2026-01-29-104622-client.txt

35kB

Alexander01998

Hi maki_suzuhara,

Sinytra Connector versions beta.11 and beta.12 for Minecraft 1.21.1 are broken. You're currently on beta.12 according to the crash report, so I'm guessing that's the issue. You have to use beta.10 for now.

Hope this helps!

_3010

Hello admin i just wanna know how to install wurst in minecraft NeoForge version 1.21.1.218 it mean better minecraft version 5