Minecraft Exit Code 0 Fix – Tried Everything Quick

30-Second Fix: Update Java

Exit Code 0 is almost always a Java version mismatch. Check your Java version: open command prompt and type java -version. If it's older than Java 17, that's your problem. Minecraft 1.18+ requires Java 17 or newer – earlier versions won't work.

Download the latest Java from Adoptium (I've used them for years – no bundled crap). Install it, then restart your launcher. This alone fixed 8 out of 10 cases for me.

Don't bother with reinstalling Minecraft before checking Java – it rarely helps.

5-Minute Fix: Fix Memory Allocation

If Java's current but you're still crashing, the culprit is usually RAM allocation. Minecraft defaults to 1-2GB, which isn't enough for modpacks or newer chunks.

1. Open the Minecraft Launcher.
2. Click Installations, then hover over your profile and click the three dots > Edit.
3. Under Java Arguments, find -Xmx2G or -Xmx1G. Change it to -Xmx4G (4GB) – don't go above half your system RAM.
4. Save and launch.

I've seen this fix crash loops instantly. If your PC has 8GB total, stick with 4GB. Going higher causes pagefile thrashing and more crashes.

15+ Minute Fix: Clean Reinstall + Mod Check

Still broken? Time to strip everything down. Here's what I do:

Step 1: Backup and Delete the .minecraft Folder

Don't just uninstall – that leaves config files behind. Close the launcher, then:

• Press Win + R, type %appdata%, hit Enter.
• Find the .minecraft folder. Copy it to your desktop as backup, then delete the original.
• Reinstall Minecraft from scratch. This clears corrupted profile settings, bad mod configs, or broken resource packs.

Step 2: Disable All Mods

If you're using Fabric or Forge, rename your mods folder to mods_old. Launch the game vanilla. If it works, a mod's the problem. Reintroduce them one by one – I usually start with OptiFine (causes more conflicts than it solves lately).

Step 3: Check Graphics Drivers

Rare, but I've seen old AMD drivers (pre-2022) trigger Exit Code 0 with shaders. Use DDU (Display Driver Uninstaller) to nuke the old driver, then install the latest from Nvidia or AMD. Intel users – update through Windows Update or Intel's site directly.

One more thing: If you're on a laptop with switchable graphics, force Minecraft to use your dedicated GPU. In Nvidia Control Panel, add javaw.exe under Program Settings and set it to High-Performance. AMD has a similar option in Radeon Software.

If none of this works? Check your antivirus temporarily – Malwarebytes and Norton have flagged Minecraft's Java process before. Add an exception for the .minecraft folder and the launcher's installation path.

Exit Code 0 looks scary, but it's rarely a hardware issue – it's always Java, memory, or a mod. Start at the top of this list and stop when it works.