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launcher error 0x1
Moderate
Minecraft · Gaming
The Minecraft Launcher failed to start the game process
Quick Answer
Error code Launcher Error 0x1 on your Minecraft Gaming means: The Minecraft Launcher failed to start the game process. This is usually fixable — see the step-by-step guide below.
Affected Models
Applies to all models
MC-BEDROCK-MOBILEMC-BEDROCK-PSMC-BEDROCK-SWITCHMC-BEDROCK-WINMC-BEDROCK-XBOXMC-JAVA
Likely Causes
  1. Corrupted Minecraft installation or launcher files
  2. Java Runtime Environment is missing, outdated, or corrupted
  3. Antivirus software is blocking the game from launching
  4. Insufficient system resources (RAM or disk space) to start the game
How to Fix It
1
Close the launcher, delete the .minecraft/versions folder, and relaunch to redownload game files
2
Install or update the Java Runtime Environment to the latest version from java.com
3
Add the Minecraft Launcher and Java to your antivirus exception list
4
Ensure you have at least 4 GB of free RAM and 1 GB of free disk space
5
Try running the Minecraft Launcher as administrator
6
If the issue persists, uninstall both Minecraft and Java, then reinstall both fresh
Pro Tip
This fix requires some technical knowledge. If you're unsure about any step, consider contacting support or a qualified technician.
Related Error Codes
Getsockopt ErrorError Code DrownedError Code 1Network Protocol ErrorError 422
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