Minecraft:Crash

File:Mclauncher game crash debug 2020.png

The Template:El crash screen in the current launcher

File:Out of Memory 1.21.4.png

A world crashing due to running out of memory

A crash is an unexpected termination of a computer program. In Minecraft:Minecraft these are generally caused by unhandled "exceptions" while running the game. When Minecraft crashes, it typically closes immediately, though it may show an error report marking the location of the exception that caused the crash instead of closing. A sign of a server crash during gameplay is a "Saving Minecraft:world" screen before the game window closes.

The most common causes of crashes are Minecraft:mods, pre-existing bugs, updates and running out of memory. Attempting to modify the files of Minecraft or individual worlds, even with advanced editors, can also cause crashes.

Causes of crashes

Common

Mods

Crashes can easily occur due to bugged mods (e.g., particularly unfinished mod versions, more common in alpha than beta versions, mods under certain conditions that lack some specific APIs and libraries to support several features, etc.), mod conflicts (particularly in older Minecraft versions when mods used a config file to determine item/block IDs and they were not changed by the end-user), or wrong versions of mods.

Incorrect Java version

Recent versions of Minecraft require significantly newer versions of Java than versions prior to 1.16. Older versions could run on Java 6, 7, or 8, while newer versions require Java 16, 17, 21 or 25. Recent Java versions broke the backward compatibility that existed up to Java 8, introducing breaking changes that stop older programs from running on newer versions of Java. If the incorrect version is used, the game crashes during startup due to Minecraft attempting to use functions and commands that are absent in the Java version the game is expecting to run on, or in later versions, crashing when it detects an incompatible version of Java.

Hardware problems

Problems with the user's hardware can also easily cause crashing or buggy behavior. If this is the case, it's likely that they are experiencing problems in other, unrelated games as well. If Minecraft is the only game experiencing issues, then it is unlikely to be a hardware issue.

If the player is indeed experiencing crashing or visual corruption in other games as well, it is recommended to check whether their computer's vents are blocked, or clogged with dust (which inevitably occurs over time). Dust or vent/fan blockages can cause overheating, which may not be severe enough to cause problems during normal computer use, but during more intensive activities such as gaming, the temperature may spike. If the player is using a laptop, they should make sure any vents on its sides or bottom are neither blocked nor filled with dust. For a desktop, the player should check obvious fan locations for blockages, and use a flashlight to peer inside the case.

If the player's computer appears to not be suffering from overheating related issues, another cause of game crashing could be a damaged component, especially either the RAM, or the video card.

It should be noted that even if the player's computer meets the basic system requirements of Minecraft, there is a possibility that their hardware might have unique issues, one being the use of Intel GMA (Graphics Media Accelerator) cards, known for issues with OpenGL.

Software

Though unlikely, unrelated software can conceivably cause crashing in games such as Minecraft. The most likely candidates are User Account Control (Windows), Gatekeeper (macOS), various types of anti-malware software, which could either consume enough system resources to choke other resource hungry applications, or could cause issues as a result of their heuristic real-time scanning.

JVM crashes

JVM crashes occur when the Java Virtual Machine, the program that runs Minecraft itself, crashes. These are almost always caused by doing large, potentially groundbreaking operations like moving many blocks, exploding a lot of TNT, or other memory or processor intensive activities, and additionally almost always are caused by running out of RAM. These are unique in that the crash message is quite different, having come from the JVM's crash handler rather than MinecraftTemplate:'s handler. Because of this, they do not generate a crash report in the Template:Cd file directly, but rather directly in the Template:Cd folder, with the filename "Template:Cd", where Template:Cd is the process ID of the JVM at that time.

Manual initiation

The player can also trigger a crash manually by holding Template:Key and Template:Key. This is used for debugging, and is the safest possible crash. On some computers, pressing Template:Key enables the F3 key.

Specific versions

Old versions

Indev versions of Minecraft might trigger a Template:Samp when generating a new world of the size "huge". Some versions might not start and throw an exception instantly.

Development versions

In development versions from 13w02a to 13w09c of 1.5, and from 14w10a to 14w25b of 1.8, certain blocks with extreme data values such as overgrown cocoa, wheat, melon and pumpkin stems may cause the game to crash due to the invalid block rendering.

April Fools' joke versions

In Minecraft:Java Edition 20w14∞, certain biomes in the generated dimensions may cause the game to crash, depending on the seed, due to exceptions in Java, such as "bound must be positive" and "Exception generating new chunk". However, they are exceptionally rare to find the crashing biomes, since most dimensions do not contain the crashing biomes generated near the center of the world.

Witty comments

Witty comments are phrases shown at the top of crash reports generated using the process shown earlier in this article. They do not show on crash screens and are similar in nature to Minecraft:splashes. They can be changed by changing the player's minecraft.jar .class files. They are selected using the system's time in nanoseconds.

Witty comment	Explanation
Who set us up the TNT?	A snowclone of "Somebody set up us the bomb" from a badly translated English version of the 1991 game Zero Wing.
Everything's going to plan. No, really, that was supposed to happen.
Uh... Did I do that?	Possibly a reference to the catchphrase of Family Matters character Steve Quincy Urkel.
Oops.
Why did you do that?
I feel sad now :(
My bad.
I'm sorry, Dave.	Part of the famous quote "I'm sorry, Dave. I'm afraid I can't do that." from the movie 2001: A Space Odyssey.
I let you down. Sorry :(
On the bright side, I bought you a teddy bear!
Daisy, daisy...	A second reference to the movie 2001: A Space Odyssey, where the Hal 9000 sings "Daisy Bell" as Dave tries to turn him off.
Oh - I know what I did wrong!	A cross-reference to the "I just don't know what went wrong :(" witty comment.
Hey, that tickles! Hehehe!
I blame Dinnerbone.	Minecraft:Dinnerbone is a Mojangsta.
You should try our sister game, Minceraft!	References the easter egg in Minecraft where the title screen has a 1 in 10,000 (0.01%) chance to rearrange the C and E in the title.
Don't be sad. I'll do better next time, I promise!
Don't be sad, have a hug! <3
I just don't know what went wrong :(	A cross-reference to the "Oh - I know what I did wrong!" witty comment. In addition to that, it is a reference to a line the character Derpy says in S2E14 "The Last Roundup" of My Little Pony: Friendship is Magic.
Shall we play a game?	Quote from the movie WarGames when the character David Lightman first contacts the computer Joshua.
Quite honestly, I wouldn't worry myself about that.	Another quote from 2001: A Space Odyssey. HAL's answer to Frank asking "Well of course I know all the wonderful achievements of the 9000 series, but, uh, are you certain there has never been any case of even the most insignificant computer error?"
I bet Cylons wouldn't have this problem.	The Cylons are a recurring part of the show Battlestar Galactica.
Sorry :(
Surprise! Haha. Well, this is awkward.
Would you like a cupcake?
Hi. I'm Minecraft, and I'm a crashaholic.	The common introduction in Alcoholics Anonymous meetings (and other addiction help groups) where the current speaker starts off with "Hi, my name is _____ and I'm an alcoholic".
Ooh. Shiny.	A reference to the Minecraft achievement "Oooh, shiny!".
This doesn't make any sense!
Why is it breaking :(
Don't do that.
Ouch. That hurt :(
You're mean.	This was one of the quotes from the Minecraft:Java Edition 2.0 April fool's joke.
This is a token for 1 free hug. Redeem at your nearest Mojangsta: [~~HUG~~]	A reference to a tweet made by Minecraft:Dinnerbone prior to the 2013 Minecon entitling anyone who saw him to "1 free hug", and again other similar posts he has made throughout the years.
There are four lights!	From Season 6, Episode 11 of the show Star Trek: The Next Generation where Capt. Jean-Luc Picard is captured and tortured by Cardassians, which itself is a reference to a torture scene in 1984 by George Orwell.
But it works on my machine.	An excuse some developers use when a bug occurs, claiming that it works on their machine but fails on someone else's.
Witty comment unavailable :(	Displayed if a comment fails to get selected, which is rare due to the way the comments are coded. Ironically, this is a witty comment.

Other types

Network Protocol Error-specific witty comments

Witty comment	Explanation
0xBADF00D	0xBADF00D is a hexadecimal number equivalent to 195,948,557 in decimal. It and many other similar hexadecimal numbers such as 0xDEADBEEF are a form of Hexspeak and are sometimes used as magic numbers in programming.
+'${`%&NO CARRIER
Please insert The Internet CD #4
Sabotage!
Are you sure you are not moving wrongly?	A reference to "Moved Wrongly" warning printed to logs when a player moves too fast or inside of a solid block.
This time is not my fault, I promise!
All lines are down!
Maybe a shark bit some cable	Refers to undersea internet cables, which are sometimes damaged by sharks.
404	A reference to the HTTP 404 not found error.
I'm sorry, I don't speak that language
What we've got here is failure to communicate	A reference to the 1967 film "Cool Hand Luke".
It's the tubes, they're clogged!	Reference to Ted Stevens' famous phrase "It's a series of tubes", referring to the Internet.
Abort, Retry, Ignore?	Refers to an error message seen in DOS-based operating systems, often used in the 1980s and 1990s.
Could be worse, I guess
Wait, was the last bit one or zero?
Too many suspicious packets
Don't worry, I'll be fine
Maybe this time it will work!
I heard pigeons are more reliable	Reference to RFC 1149, an April Fools' proposal to use homing pigeons for internet data transfers.

Chunk IO Error-specific witty comments

Witty comment	Explanation
I have failed you!
Let's not do it again...
Worst magic trick ever!
Remember to backup your worlds regularly	It is a good idea to backup your worlds regularly, just in case something bad might happen to the world.
Pirates stole your chunk!
Ker-chunk!
Ideally, this shouldn't be here
Let's hope it wasn't anything important
Computers were a mistake
Welp
Not my proudest moment
Who needs blocks in a block game, right?	Minecraft:Minecraft is a block game.
This chunk is no more...it has ceased to be...this is an EX-chunk	Reference to the "Template:W" from Template:W.
loss.mca	Reference to the webcomic Ctrl+Alt+Del's "Loss" strip, which has become a meme and is sometimes referred to as "loss.jpg", as well as the Minecraft:Anvil file format.

Hopper

Hopper is a non-publicly viewable crash report utility, operated by Minecraft:Mojang, which manages, stores, and maintains crash reports, originally exclusively for technical Minecraft troubleshooting. In 2019, its help articles were moved to minecrafthopper.net and all Hopper pages are redirected to the new site. It is maintained by the community and contributions are welcome in its repository on GitHub.

Gallery

• A crash screen in Alpha
  A crash screen in Alpha
• A crash screen in Beta
  A crash screen in Beta
• The old Minecraft crash screen, with more options. Image for Minecraft:Launcher 1.3.8
  The old Minecraft crash screen, with more options. Image for Minecraft:Launcher 1.3.8
• A world crashing due to running out of memory
  A world crashing due to running out of memory
• The Minceraft easter egg in the crash logs
  The Minceraft easter egg in the crash logs

See also

• Minecraft:Error