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# Error: Internal exception: java.IOException: An existing connection was forcibly closed by the remote host


# ❌ Error: Internal exception: `java.io.IOException: An existing connection was forcibly closed by the remote host`

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This error usually occurs when your connection to the server is **interrupted** or **unstable**, preventing Minecraft from downloading data smoothly. It’s commonly caused by:

* 🕸️ Weak or unstable WiFi signal
    
* 📶 Network congestion from other apps or devices
    
* 🌐 ISP instability or slow speeds
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## ✅ How to Fix It

1. **Close any high-bandwidth apps**
    Stop video streams, downloads, or other devices using the same connection.
    
2. **Restart your router or modem**
    A simple reboot can often fix connection hiccups.
    
3. **Run a speed test**
    Use [Speedtest.net](https://www.speedtest.net/) to check your connection quality.
    
4. **Switch to a wired connection (if possible)**
    Ethernet is more stable than WiFi, especially for gaming.
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Once your internet connection is stable, try connecting to the server again. In most cases, the error will no longer occur.