MultiMC version: 0.7.0-4248 Launched instance in online mode sessionserver.mojang.com resolves to: [13.107.246.40, 13.107.213.40] textures.minecraft.net resolves to: [13.107.246.40, 13.107.213.40] api.minecraftservices.com resolves to: [13.107.213.40, 13.107.246.40] Minecraft folder is: C:/Users/jippi/Documents/Minecraft/MultiMC/instances/26.1/.minecraft Java path is: C:/Program Files/Java/jdk-21/bin/javaw.exe Checking Java version... Java is version 21.0.6, using amd64 architecture, from Oracle Corporation. Main Class: net.minecraft.client.main.Main Native path: C:/Users/jippi/Documents/Minecraft/MultiMC/instances/26.1/natives Traits: traits XR:Initial traits FirstThreadOnMacOS Libraries: C:/Users/jippi/Documents/Minecraft/MultiMC/libraries/at/yawk/lz4/lz4-java/1.10.1/lz4-java-1.10.1.jar C:/Users/jippi/Documents/Minecraft/MultiMC/libraries/com/azure/azure-json/1.4.0/azure-json-1.4.0.jar C:/Users/jippi/Documents/Minecraft/MultiMC/libraries/com/github/oshi/oshi-core/6.9.0/oshi-core-6.9.0.jar C:/Users/jippi/Documents/Minecraft/MultiMC/libraries/com/google/code/gson/gson/2.13.2/gson-2.13.2.jar C:/Users/jippi/Documents/Minecraft/MultiMC/libraries/com/google/guava/failureaccess/1.0.3/failureaccess-1.0.3.jar C:/Users/jippi/Documents/Minecraft/MultiMC/libraries/com/google/guava/guava/33.5.0-jre/guava-33.5.0-jre.jar C:/Users/jippi/Documents/Minecraft/MultiMC/libraries/com/ibm/icu/icu4j/77.1/icu4j-77.1.jar C:/Users/jippi/Documents/Minecraft/MultiMC/libraries/com/microsoft/azure/msal4j/1.23.1/msal4j-1.23.1.jar C:/Users/jippi/Documents/Minecraft/MultiMC/libraries/com/mojang/authlib/7.0.63/authlib-7.0.63.jar C:/Users/jippi/Documents/Minecraft/MultiMC/libraries/com/mojang/blocklist/1.0.10/blocklist-1.0.10.jar C:/Users/jippi/Documents/Minecraft/MultiMC/libraries/com/mojang/brigadier/1.3.10/brigadier-1.3.10.jar C:/Users/jippi/Documents/Minecraft/MultiMC/libraries/com/mojang/datafixerupper/9.0.19/datafixerupper-9.0.19.jar C:/Users/jippi/Documents/Minecraft/MultiMC/libraries/com/mojang/jtracy/1.0.37/jtracy-1.0.37.jar C:/Users/jippi/Documents/Minecraft/MultiMC/libraries/com/mojang/jtracy/1.0.37/jtracy-1.0.37-natives-windows.jar C:/Users/jippi/Documents/Minecraft/MultiMC/libraries/com/mojang/logging/1.6.11/logging-1.6.11.jar C:/Users/jippi/Documents/Minecraft/MultiMC/libraries/com/mojang/patchy/2.2.10/patchy-2.2.10.jar C:/Users/jippi/Documents/Minecraft/MultiMC/libraries/com/mojang/text2speech/1.18.11/text2speech-1.18.11.jar C:/Users/jippi/Documents/Minecraft/MultiMC/libraries/commons-codec/commons-codec/1.19.0/commons-codec-1.19.0.jar C:/Users/jippi/Documents/Minecraft/MultiMC/libraries/commons-io/commons-io/2.20.0/commons-io-2.20.0.jar C:/Users/jippi/Documents/Minecraft/MultiMC/libraries/io/netty/netty-buffer/4.2.7.Final/netty-buffer-4.2.7.Final.jar C:/Users/jippi/Documents/Minecraft/MultiMC/libraries/io/netty/netty-codec-base/4.2.7.Final/netty-codec-base-4.2.7.Final.jar C:/Users/jippi/Documents/Minecraft/MultiMC/libraries/io/netty/netty-codec-compression/4.2.7.Final/netty-codec-compression-4.2.7.Final.jar C:/Users/jippi/Documents/Minecraft/MultiMC/libraries/io/netty/netty-codec-http/4.2.7.Final/netty-codec-http-4.2.7.Final.jar C:/Users/jippi/Documents/Minecraft/MultiMC/libraries/io/netty/netty-common/4.2.7.Final/netty-common-4.2.7.Final.jar C:/Users/jippi/Documents/Minecraft/MultiMC/libraries/io/netty/netty-handler/4.2.7.Final/netty-handler-4.2.7.Final.jar C:/Users/jippi/Documents/Minecraft/MultiMC/libraries/io/netty/netty-resolver/4.2.7.Final/netty-resolver-4.2.7.Final.jar C:/Users/jippi/Documents/Minecraft/MultiMC/libraries/io/netty/netty-transport-classes-epoll/4.2.7.Final/netty-transport-classes-epoll-4.2.7.Final.jar C:/Users/jippi/Documents/Minecraft/MultiMC/libraries/io/netty/netty-transport-classes-kqueue/4.2.7.Final/netty-transport-classes-kqueue-4.2.7.Final.jar C:/Users/jippi/Documents/Minecraft/MultiMC/libraries/io/netty/netty-transport-native-unix-common/4.2.7.Final/netty-transport-native-unix-common-4.2.7.Final.jar C:/Users/jippi/Documents/Minecraft/MultiMC/libraries/io/netty/netty-transport/4.2.7.Final/netty-transport-4.2.7.Final.jar C:/Users/jippi/Documents/Minecraft/MultiMC/libraries/it/unimi/dsi/fastutil/8.5.18/fastutil-8.5.18.jar C:/Users/jippi/Documents/Minecraft/MultiMC/libraries/net/java/dev/jna/jna-platform/5.17.0/jna-platform-5.17.0.jar C:/Users/jippi/Documents/Minecraft/MultiMC/libraries/net/java/dev/jna/jna/5.17.0/jna-5.17.0.jar C:/Users/jippi/Documents/Minecraft/MultiMC/libraries/net/sf/jopt-simple/jopt-simple/5.0.4/jopt-simple-5.0.4.jar C:/Users/jippi/Documents/Minecraft/MultiMC/libraries/org/apache/commons/commons-compress/1.28.0/commons-compress-1.28.0.jar C:/Users/jippi/Documents/Minecraft/MultiMC/libraries/org/apache/commons/commons-lang3/3.19.0/commons-lang3-3.19.0.jar C:/Users/jippi/Documents/Minecraft/MultiMC/libraries/org/apache/logging/log4j/log4j-api/2.25.2/log4j-api-2.25.2.jar C:/Users/jippi/Documents/Minecraft/MultiMC/libraries/org/apache/logging/log4j/log4j-core/2.25.2/log4j-core-2.25.2.jar C:/Users/jippi/Documents/Minecraft/MultiMC/libraries/org/apache/logging/log4j/log4j-slf4j2-impl/2.25.2/log4j-slf4j2-impl-2.25.2.jar C:/Users/jippi/Documents/Minecraft/MultiMC/libraries/org/jcraft/jorbis/0.0.17/jorbis-0.0.17.jar C:/Users/jippi/Documents/Minecraft/MultiMC/libraries/org/joml/joml/1.10.8/joml-1.10.8.jar C:/Users/jippi/Documents/Minecraft/MultiMC/libraries/org/jspecify/jspecify/1.0.0/jspecify-1.0.0.jar C:/Users/jippi/Documents/Minecraft/MultiMC/libraries/org/lwjgl/lwjgl-freetype/3.4.1/lwjgl-freetype-3.4.1.jar C:/Users/jippi/Documents/Minecraft/MultiMC/libraries/org/lwjgl/lwjgl-freetype/3.4.1/lwjgl-freetype-3.4.1-natives-windows.jar C:/Users/jippi/Documents/Minecraft/MultiMC/libraries/org/lwjgl/lwjgl-freetype/3.4.1/lwjgl-freetype-3.4.1-natives-windows-arm64.jar C:/Users/jippi/Documents/Minecraft/MultiMC/libraries/org/lwjgl/lwjgl-freetype/3.4.1/lwjgl-freetype-3.4.1-natives-windows-x86.jar C:/Users/jippi/Documents/Minecraft/MultiMC/libraries/org/lwjgl/lwjgl-glfw/3.4.1/lwjgl-glfw-3.4.1.jar C:/Users/jippi/Documents/Minecraft/MultiMC/libraries/org/lwjgl/lwjgl-glfw/3.4.1/lwjgl-glfw-3.4.1-natives-windows.jar C:/Users/jippi/Documents/Minecraft/MultiMC/libraries/org/lwjgl/lwjgl-glfw/3.4.1/lwjgl-glfw-3.4.1-natives-windows-arm64.jar C:/Users/jippi/Documents/Minecraft/MultiMC/libraries/org/lwjgl/lwjgl-glfw/3.4.1/lwjgl-glfw-3.4.1-natives-windows-x86.jar C:/Users/jippi/Documents/Minecraft/MultiMC/libraries/org/lwjgl/lwjgl-jemalloc/3.4.1/lwjgl-jemalloc-3.4.1.jar C:/Users/jippi/Documents/Minecraft/MultiMC/libraries/org/lwjgl/lwjgl-jemalloc/3.4.1/lwjgl-jemalloc-3.4.1-natives-windows.jar C:/Users/jippi/Documents/Minecraft/MultiMC/libraries/org/lwjgl/lwjgl-jemalloc/3.4.1/lwjgl-jemalloc-3.4.1-natives-windows-arm64.jar C:/Users/jippi/Documents/Minecraft/MultiMC/libraries/org/lwjgl/lwjgl-jemalloc/3.4.1/lwjgl-jemalloc-3.4.1-natives-windows-x86.jar C:/Users/jippi/Documents/Minecraft/MultiMC/libraries/org/lwjgl/lwjgl-openal/3.4.1/lwjgl-openal-3.4.1.jar C:/Users/jippi/Documents/Minecraft/MultiMC/libraries/org/lwjgl/lwjgl-openal/3.4.1/lwjgl-openal-3.4.1-natives-windows.jar C:/Users/jippi/Documents/Minecraft/MultiMC/libraries/org/lwjgl/lwjgl-openal/3.4.1/lwjgl-openal-3.4.1-natives-windows-arm64.jar C:/Users/jippi/Documents/Minecraft/MultiMC/libraries/org/lwjgl/lwjgl-openal/3.4.1/lwjgl-openal-3.4.1-natives-windows-x86.jar C:/Users/jippi/Documents/Minecraft/MultiMC/libraries/org/lwjgl/lwjgl-opengl/3.4.1/lwjgl-opengl-3.4.1.jar C:/Users/jippi/Documents/Minecraft/MultiMC/libraries/org/lwjgl/lwjgl-opengl/3.4.1/lwjgl-opengl-3.4.1-natives-windows.jar C:/Users/jippi/Documents/Minecraft/MultiMC/libraries/org/lwjgl/lwjgl-opengl/3.4.1/lwjgl-opengl-3.4.1-natives-windows-arm64.jar C:/Users/jippi/Documents/Minecraft/MultiMC/libraries/org/lwjgl/lwjgl-opengl/3.4.1/lwjgl-opengl-3.4.1-natives-windows-x86.jar C:/Users/jippi/Documents/Minecraft/MultiMC/libraries/org/lwjgl/lwjgl-stb/3.4.1/lwjgl-stb-3.4.1.jar C:/Users/jippi/Documents/Minecraft/MultiMC/libraries/org/lwjgl/lwjgl-stb/3.4.1/lwjgl-stb-3.4.1-natives-windows.jar C:/Users/jippi/Documents/Minecraft/MultiMC/libraries/org/lwjgl/lwjgl-stb/3.4.1/lwjgl-stb-3.4.1-natives-windows-arm64.jar C:/Users/jippi/Documents/Minecraft/MultiMC/libraries/org/lwjgl/lwjgl-stb/3.4.1/lwjgl-stb-3.4.1-natives-windows-x86.jar C:/Users/jippi/Documents/Minecraft/MultiMC/libraries/org/lwjgl/lwjgl-tinyfd/3.4.1/lwjgl-tinyfd-3.4.1.jar C:/Users/jippi/Documents/Minecraft/MultiMC/libraries/org/lwjgl/lwjgl-tinyfd/3.4.1/lwjgl-tinyfd-3.4.1-natives-windows.jar C:/Users/jippi/Documents/Minecraft/MultiMC/libraries/org/lwjgl/lwjgl-tinyfd/3.4.1/lwjgl-tinyfd-3.4.1-natives-windows-arm64.jar C:/Users/jippi/Documents/Minecraft/MultiMC/libraries/org/lwjgl/lwjgl-tinyfd/3.4.1/lwjgl-tinyfd-3.4.1-natives-windows-x86.jar C:/Users/jippi/Documents/Minecraft/MultiMC/libraries/org/lwjgl/lwjgl/3.4.1/lwjgl-3.4.1.jar C:/Users/jippi/Documents/Minecraft/MultiMC/libraries/org/lwjgl/lwjgl/3.4.1/lwjgl-3.4.1-natives-windows.jar C:/Users/jippi/Documents/Minecraft/MultiMC/libraries/org/lwjgl/lwjgl/3.4.1/lwjgl-3.4.1-natives-windows-arm64.jar C:/Users/jippi/Documents/Minecraft/MultiMC/libraries/org/lwjgl/lwjgl/3.4.1/lwjgl-3.4.1-natives-windows-x86.jar C:/Users/jippi/Documents/Minecraft/MultiMC/libraries/org/slf4j/slf4j-api/2.0.17/slf4j-api-2.0.17.jar C:/Users/jippi/Documents/Minecraft/MultiMC/libraries/com/mojang/minecraft/26.1/minecraft-26.1-client.jar Native libraries: Params: --username muzdef --version 26.1 --gameDir C:/Users/jippi/Documents/Minecraft/MultiMC/instances/26.1/.minecraft --assetsDir C:/Users/jippi/Documents/Minecraft/MultiMC/assets --assetIndex 30 --uuid --accessToken --versionType release Window size: 854 x 480 Java Arguments: [-XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump, -Xms2048m, -Xmx3152m, -Duser.language=en] Minecraft process ID: 27476 Using onesix launcher. Exception in thread "main" java.lang.UnsupportedClassVersionError: net/minecraft/client/main/Main has been compiled by a more recent version of the Java Runtime (class file version 69.0), this version of the Java Runtime only recognizes class file versions up to 65.0 at java.base/java.lang.ClassLoader.defineClass1(Native Method) at java.base/java.lang.ClassLoader.defineClass(ClassLoader.java:1027) at java.base/java.security.SecureClassLoader.defineClass(SecureClassLoader.java:150) at java.base/jdk.internal.loader.BuiltinClassLoader.defineClass(BuiltinClassLoader.java:862) at java.base/jdk.internal.loader.BuiltinClassLoader.findClassOnClassPathOrNull(BuiltinClassLoader.java:760) at java.base/jdk.internal.loader.BuiltinClassLoader.loadClassOrNull(BuiltinClassLoader.java:681) at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:639) at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:188) at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:526) at org.multimc.onesix.OneSixLauncher.launchWithMainClass(OneSixLauncher.java:217) at org.multimc.onesix.OneSixLauncher.launch(OneSixLauncher.java:278) at org.multimc.EntryPoint.listen(EntryPoint.java:143) at org.multimc.EntryPoint.main(EntryPoint.java:34) Process exited with exit code 1 (0x1). 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. Clipboard copy at: 25 Mar 2026 10:48:50 -0400 MultiMC: Log upload triggered at: 25 Mar 2026 10:51:03 -0400