Why Is My Minecraft Crashing?
By PickaxeKit Editorial Team · Updated 2026-11-08
Most crashes come from a wrong Java version, a missing or outdated mod, two mods that clash, running out of memory or an old graphics driver. Your crash report says which one: drop it into a crash analyzer to read it in plain English.
Find your crash report
Crash reports are in the crash-reports folder inside .minecraft (Windows: Win + R, then %appdata%\.minecraft). The newest file is your latest crash. The logs folder holds latest.log, which also helps.
The usual causes
| Cause | Sign in the report | Fix |
|---|---|---|
| Wrong Java | UnsupportedClassVersionError | Install the Java version your Minecraft needs |
| Missing mod | requires … which is missing | Install the mod it names (often Fabric API) |
| Mod for another version | requires version … of minecraft | Download the right build of that mod |
| Two mods clash | Mixin / InvalidInjectionException | Update or remove the mod it names |
| Out of memory | OutOfMemoryError | Raise RAM in the launcher (about 4 GB for modpacks) |
| Graphics driver | nvoglv64.dll, atio6axx.dll, GLFW error | Update your graphics driver |
Tip: The Crash Doctor reads all of these for you and names the exact mod when it can.
Still crashing?
- Check your mods folder with the Mod Checker for duplicates and wrong versions.
- Remove half your mods, test, and repeat to find the one causing it.
- Back up your world before trying fixes.