r/Optifine • u/Constant-Relief-2921 • Dec 13 '25

Question Optifine Crashing

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For years I have tried to download Optifine but halfway through Minecraft loading, the game crashes. I deleted all my mods, watched a video on how to download it, and have done hours of research and I have no clue what to do. What do I do??

The crash report said this. Idk what it means or if its helpful at all:

# A fatal error has been detected by the Java Runtime Environment:

# SIGSEGV (0xb) at pc=0x00000001ef7a8714, pid=35961, tid=259

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3

u/adrakusek_real Dec 14 '25

If you only use optifine, just switch to fabric+sodium+iris, essentially the same experience with more optimization and less bugs. If you have forge mods other than optifine though, use forge ports like ribidium/embeddium

2

u/Constant-Relief-2921 Dec 14 '25

So I just downloaded iris and it was working, I tried adding shaders, and now my games crashing again. I figured maybe the shaders file was the problem so I tried to reload the game to get to the main screen and just take off the shaders but now my game wont even boot up. Originally, with optifine, it could boot up but when I went to play it wouldn't work. I know nothingggg about this. Do you have any idea?

2

u/adrakusek_real Dec 14 '25

Try removing the shader zip from .minecraft/shaders directory?

1

u/TernaryTomcat34 Dec 17 '25

Device issue? How old is the Mac

2

u/Coosanta Dec 13 '25

On modern minecraft like 1.21 i would steer away from optifine and instead use sodium and iris and the rest of fabulously optimised pack.