Jump to content
Please read the rules and FAQ before starting a new topic
Currently supported: All versions

A solution to: "Failed to log in: The authentication servers are currently not reachable. Please try again."

Nievillis

By Nievillis
in Support & Bug Reports

 Share

Recommended Posts

Nievillis Tree Puncher

Nievillis

Posted
Posted (edited)

Before I begin, I have found the solution to this problem already, so I will share it here.

Yesterday I came across a very annoying issue with All The Mods 7. I could not conntect to my friend's server, in whatever way I tried.

image.png

I have tried everything, I tried to turn off my Windows Firewall, I tried to install an extra Mod, "ReAuth", which does what its name implies, but it could not reach the Authentication servers!

It all still led to the following error message:

image.png

__________________________________________________________________________________________________________________

Thankfully, I came across the following thread:

It's not my solution, in fact the solution is already stated in this Website, so in order to avoid plagitarism, I hope that me posting this takes care of it. It took lots of effort to try and find any solutions, so I hope that Google's engine will throw this into page one and will help those who frustratingly just want to join a friend's server after a long week.

 

Basically the problem is that, when you have a Wireless connection, Forge tries to connect with to the auth servers via your ipv6 connection.

To summarize, ipv4 looks like "192.168.1.0", while ipv6 looks like "c8:33:e2:ae:1" and both have the same function.

Many routers disable their ipv6 functionality, which causes your internet connection in the ipv6-spectrum to be inactive.

However your computer might still have enabled ipv6 connections and the later Forge versions assume that the ipv6 connection is alright, when enabled, instead of checking, whether it is actually usable.

____________________________________________________________________________________________________________

Solution

Enter Control Panel into Windows Search and open it. Now follow: 

Control Panel > Network and Internet > Network and Sharing Centre

On the left, go into "Change adapter settings".

Right-Click onto your WiFi Receiver.

In the Context Menu, you can click Status to check whether your PC has ipv6 enabled. It might look something like this:

image.png

Mind that if IPv6 Connectivity doesn't say this, you should stop following this solution, as that means that the problem lies somewhere else!

If this is the case, Click the Properties Button on the bottom and inside it, scroll down till you find an entry saying something like "Internet Protocol, Version 6 (TCP/IPv6)" and tick it off to disable it.

__________________________________________________________________________________________________

Conclusion

Now atleast the Authentication Error in 1.18.2 Forge should be fixed. I don't know whether this happens or works for other versions.

I hope this helped, and I encourage the Forge Team to program a check for whether IPv6 is useable or not.

Have a good day! :)

Edited by Nievillis
warjort Reality Controller

warjort

Posted
Posted (edited)
Quote

I don't know whether this happens or works for other versions.

I hope this helped, and I encourage the Forge Team to program a check for whether IPv6 is useable or not.

AFAIK, Minecraft didn't support ipv6 before 1.18

 

But this isn't forge, it's java and your network configuration.

Instead of turning off ipv6 globally you can just set

Quote

-Djava.net.preferIPv4Stack=true

in the java arguments of your launcher config (same place you specify the memory -Xmx value).

 

Forge/Minecraft has no way to know "connection timed out" is this problem - broken network routing

or some other issue. e.g. the server taking too long.

Edited by warjort
  • Like 1

Boilerplate:

If you don't post your logs/debug.log we can't help you. For curseforge you need to enable the forge debug.log in its minecraft settings. You should also post your crash report if you have one.

If there is no error in the log file and you don't have a crash report then post the launcher_log.txt from the minecraft folder. Again for curseforge this will be in your curseforge/minecraft/Install

Large files should be posted to a file sharing site like https://gist.github.com  You should also read the support forum sticky post.

Nievillis Tree Puncher

Nievillis

Posted
  • Author
Posted

@warjortThat's interesting, thanks for bringing that to attention. I have never had that issue before playing modded 1.18.2, which is the interesting part. I could log into hypixel on 1.18.2, 1.19.4 vanilla without any issues and no visible errors in the logs, prior to the solution I took. Are you sure there isn't some Forge-specific IPv6 implementation?

  • 10 months later...
  • 3 months later...
  • 2 months later...
calculator12345 Tree Puncher

calculator12345

Posted
Posted

Hi, this is a super late reply but i had an issue where i couldn't connect to anything because "error connecting to authentication servers" so i tried disabling the ipv6 address (wired connection, not wireless) and it fixed my problem. I could join servers instantly. Thanks for the help

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Unfortunately, your content contains terms that we do not allow. Please edit your content to remove the highlighted words below.
Reply to this topic...

×   Pasted as rich text.   Restore formatting

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
 Share
Go to topic listing

Announcements



  • Recently Browsing

    • No registered users viewing this page.

  • Posts

    • TheGudBIAS
      Using Mixins, gone bad with @At INVOKE value.

      By TheGudBIAS · Posted

      I have used mixins once before, and it was with @At RETURN, so it worked fine. Now im trying to use it as INVOKE, and the compilation is successful, but the client crashes almost on startup (just a couple seconds after running runClient)   Im trying to inject the method finishConversion inside the ZombieVillager class. This is my Mixin class important stuff:   import net.minecraft.server.level.ServerLevel; import net.minecraft.world.entity.monster.ZombieVillager; import org.spongepowered.asm.mixin.Mixin; import org.spongepowered.asm.mixin.injection.At; import org.spongepowered.asm.mixin.injection.Inject; import org.spongepowered.asm.mixin.injection.callback.CallbackInfo; @Mixin(ZombieVillager.class) public class ZombieVillagerCures { @Inject(method = "finishConversion", at = @At(value = "INVOKE_ASSIGN", target = "Lnet/minecraft/world/entity/LivingEntity;addEffect(Lnet/minecraft/world/effect/MobEffectInstance;)Z")) private void addZombieVillagerCuredAmmount(ServerLevel level, CallbackInfo info) { System.out.println("The Mixin Worked!!! " + level); } // Lnet/minecraft/world/entity/LivingEntity;addEffect(Lnet/minecraft/world/effect/MobEffectInstance;)Z } I'm sure the issue lies in the @At cuz other @At values work fine. Its probably the fully qualified name thing. idk how to get it in VS code
    • TheGudBIAS
      Replace trader with custom mob when event is triggered

      By TheGudBIAS · Posted

      I'm wayy less skilled than you i bet, but maybe u could try to just convert one into the other?
    • TileEntity
      Mod discovery errors

      By TileEntity · Posted

      wildbackport is not working
    • Victoria Spencer
      Steps To Recover Stolen Funds From Blockchain web3

      By Victoria Spencer · Posted

      Through Betafort Recovery, Bitcoin scam victims can retrieve their money. I recommend Betafort Recovery to anyone who has fallen victim to a scam and has been looking for methods and techniques to recover their lost cryptocurrency or wallets. Betafort Recovery is a reliable cryptocurrency recovery firm that assists victims in recovering their stolen cryptocurrency and offers secure solutions to protect your wallets from online scammers. I must admit that I was deeply melancholy and had given up on life until these experts could restore my $23,400 to my wallet. If you've lost your cryptocurrency and you are helpless about it, contact Betafort Recovery to get your money back. One key aspect that makes Betafort Recovery stand out is its focus on providing secure solutions to protect wallets from online scammers. It's not just about recovering lost funds; it's also about preventing future incidents and ensuring that clients' digital assets are safeguarded against potential threats. This proactive approach demonstrates their commitment to the long-term financial security of their clients. Furthermore, for individuals who have lost their cryptocurrency and are feeling helpless, reaching out to Betafort Recovery could be a turning point in their situation. The reassurance that they are legitimate for seeking help and recovering lost funds can provide much-needed relief and a sense of empowerment. Betafort Recovery as a reliable cryptocurrency recovery firm is certainly well-founded. Their ability to assist scam victims in recovering stolen cryptocurrency, their focus on providing secure solutions, and their commitment to supporting clients through challenging situations make them a valuable resource for individuals navigating the complex world of digital currencies. If you or someone you know has fallen victim to a cryptocurrency scam, contacting Betafort Recovery could be the first step towards reclaiming lost funds and regaining peace of mind.  
    • Samaka
      Mod discovery errors

      By Samaka · Posted

      Idk how i didn't notice that, but I deleted it and fixed some other issues and now I get this https://mclo.gs/YsWacqq

  • Topics

×
×
  • Create New...

Important Information

By using this site, you agree to our Terms of Use.

  I accept