Why Is My Server Not Starting? Common Fixes
Clicked "Start" but nothing happens? Or maybe your Minecraft server crashes immediately after launch? Don’t worry — this guide covers the most common reasons your server might not be starting and how to fix them using the Pterodactyl panel.
✅ Step 1: Check the Console for Errors
Go to your server panel and open the Console tab. If there’s a problem, the error will usually show up in red text shortly after starting the server.
Look out for messages like:
Missing or invalid jar file
Failed to bind to port
OutOfMemoryError
Plugin/mod failed to load
✅ Step 2: Make Sure Your Startup File Is Set Correctly
- Go to the Startup tab
- Find the field labeled Server Jar File or similar
- Make sure it matches the filename of your actual server file (e.g.,
server.jar
)
If the file name doesn't match, the server can't find the file and won’t start.
✅ Step 3: Check for Mod or Plugin Errors
- Running a modded or plugin-based server (e.g., Paper, Forge, Fabric)?
- Make sure all mods/plugins are compatible with your server version
- Try removing the most recently added plugin or mod and restart
Still unsure? Use the /timings paste
command after startup or contact support for help reviewing the logs.
✅ Step 4: Check for Port Conflict
If you see an error like:
FAILED TO BIND TO PORT
This means another server may already be using the same port. Open a support ticket — we’ll help resolve it.
✅ Step 5: Make Sure EULA Is Accepted (Vanilla/Forge)
Some server types (like Vanilla or Forge) won’t start until you accept the Minecraft EULA:
- Go to the File Manager
- Open
eula.txt
- Change
false
totrue
and save the file - Restart the server
✅ Step 6: Check Disk Space
If your server is out of disk space (e.g., due to logs, backups, or large worlds), it might not start properly.
- Delete unnecessary files or backups
- Or upgrade your plan for more storage
???? Final Tips
- Always check the console first — it’s your best troubleshooting tool
- Keep backups before making major changes
- Try starting the server with plugins or mods temporarily disabled
Still stuck? Open a support ticket and include a copy of your console log — we’ll help you get it running!