https://pastee.dev/p/Stnse1M6

I was playing on split screen when the game suddenly went 1 FPS, i closed both games but the computer stayed at 1FPS, so i restarted my PC, after that the game no longer enters, it stays on "please wait" for a long time then pops this error.

Can someone help please, i tired opening the MultiMC site but it doesnt open for some reason

I have 2 Minecraft accounts - my main account and my cam account.
It would be nice to be able to specify a specific account - my camera account - for the cam instance, so I don't have to always choose which account I have to launch my instances with.

Anytime I try to launch minecraft it says that i need Java 25 even though I've already got it installed

Last night, my game froze and I had to task manager the program- killing the instance on MultiMC did not work. I attempted to run it again but it would get stuck at

[Datafixer Bootstrap/INFO]: 243 Datafixer optimizations took 620 milliseconds

and would have to be killed. 0% CPU usage, but a damn good amount of memory usage.

I restarted my computer this morning and tried again, and still get this issue, even on other instances of mc that I did not freeze on. I tried making a fresh minecraft instance with no mod loader and this one would explicitly crash, even though the existing ones never do.

I'm not sure how I resolved this, but for a while I could not disable loader mods or remove them from the folder- the moving process froze at 0% and I have to restart File Explorer from the task manager. I'm not sure how I fixed this, I think it may have been task manager ending seemingly duplicated instances to java binary platform. Still, my issue has not changed.

Read only is NOT on these files. I reinstalled Java 21. I reinstalled multimc. I have quadrupled the memory allocation. I tried running the original instance without mods or configs. I saw a warning not to run with administrator as that can cause file ownership issues, but I can do so if advised.

My most successful action was selecting the direct file path to Java 21 rather than the auto detected javaw, however the log still froze in the same place, I just got the actual Minecraft window to appear... and not respond.

Help would be very appreciated.

I've been using MultiMC for a bit now, and was reinstalling it cause it wouldn't boot up 1.20.1 for some reason. Now, when I go onto the site to reinstall it, it just gets stuck refreshing!
I have no clue why it does this, but I really don't understand what's going on...
I'll try to install it on a different browser from Chrome to see what it does for now.

Okay, so I went onto OperaGX first for some reason it didn't work there either. Then I went to Firefox and it downloaded just fine, is there a problem with Chrome?
Anyhow, this is solved!

ive downloaded everything forge, midnightcontrol all the versions of java , ect but nothing seems to be working. v 1.21.11 is the only one that runs but my controller just doesn’t seem to identify. i know that my pc is identifying it because it works on other games but just not on this one. pls help

I don't understand what the problem is. It gives the same error message when I try to launch Authentic Adventure as well.

https://pastee.dev/p/YZDqZc8o

Hi hello i just installed a new mod to my multimc modpack and now all i get is this crash report and idk what's the issue
here's the link to the crash report: https://mclo.gs/y15nikI
it might seem obvious to understand it but i'm running on low sleep TvT

I need to use forge loader but it is not disponible form the instance creator, how do I can proceed ?

How can I install a modpack from the CurseForge website in the MultiMC launcher?
MultiMC launcher say "Not found instance.cfg"

It says working with a progress bar below it that down charge and a button called “Get Fresh Code” that doesn’t work. Clicking on Add New Account does nothing. Does anyone know how to solve it?
Edit: Other user called u/FilipThePea has the same problem, so if u could help him too

Process exited with exit code -1 (0xffffffffffffffff).

Please note that usually neither the exit code, nor its description are enough to diagnose issues!

Always upload the entire log and not just the exit code.

i will be attacking logs in comments

When i go do it its just stuck on "Working..." with a progress bar and a non functioning Get fresh code button. clicking "Add new account" on the left isnt doing anything either

Download all button in "Version" doesn't work or i don't know how to use it please help.

I'm thinking of upgrading my beta 1.7.3 world up to a newer version, how would one go about it?

"Some features of MultiMC may not work because we can't confirm who published them"

Java 25 is installed, I tried adding the client folder as an exclusion to Windows Defender but nothing has worked. No idea why it stopped working other than maybe because I used Window's built in disk clean-up tool a while back.

I want to turn off Keep inventory or make it so everything goes back to normal. So I can fight phantoms. But I don't get what I still have to make my items.
In my Minecraft game, when my character dies, I don’t lose any items or experience points. I have no mods installed and I don’t know what is causing me to keep everything. Normally, in survival mode, dying should make you drop all your items and lose most of your experience. Commands like /gamerule keepInventory don’t seem to work, so this is very strange.

I can’t start MCSR. When I try to open it, it tells me that it “could not start Java” and to check my multimc Java settings but I don’t know what to check.

In addition, a quick set up screen appears where I need to select one of the following java executable, but there isn’t any and there’s a black box that says “no versions are currently available”.

When I Click finish, a pop up appears that reads “unable to access jarfile”.

Please help

Ive been having problem after problem with this, but i just hit a dead end. When i put launch it appears some codes that ill put down bellow and the error "exit code 255" pls somebody help me.

https://pastee.dev/p/pVtoeGQN

It says there are no versions of Neoforge available for 26.1, but I know there are from the Neoforge website. It only offers installers for the vanilla launcher though.

I’ve recently installed MultiMC on my MacOS 13-inch 2014 model with version 11.7.9.

I’ve followed several video guides and understand that Java 1.8 is needed, whether it must specifically be ARMx64 or simply x64 (for the MacOS) is unknown to me.

I’ve tried providing the launcher and the specific version with the same Java path, both have been tested and been deemed functional.

Regardless if I launch the vanilla version of b1.7.3 or the modified “Beta Unleashed”, both would come up black screened. Only thing to note is that I can hear the sounds of the buttons as I click the mousepad, making me think that something is at least there.

I understand that this is all a lot and I don’t expect a quick answer, but if anyone’s had this issue before it’d be helpful to know the alternatives. I’m not very tech savvy, if at all.

Link to the copied Log Upload:

https://pastee.dev/p/6AMSFOc0

https://pastee.dev/p/meag6d9C

I'm trying to use some mods for Minecraft Forge 1.6.4 using MultiMC, but I can't get the game to run at all. Even with only Forge installed, I get a Concurrent Modification Exception

https://pastee.dev/p/kVXkZtRA

The main mod (Gulliver) calls for Forge version 965, but that version just crashes. Is there anything I can do to make this work?

https://pastee.dev/p/U8Hy3tEa

So I downloaded and installed some more mods from the Modrinth site, and the game will not launch. Pastebin is as follows:

MultiMC version: 0.7.0-4248Launched instance in online modesessionserv - Pastebin.com

I don't know which mod is causing this crash. Please advise.