> ## Documentation Index
> Fetch the complete documentation index at: https://docs.plugins.avenvault.com/llms.txt
> Use this file to discover all available pages before exploring further.

# DNS and Hostname Resolution Guide

> Fix java.net.UnknownHostException errors in Minecraft plugins by updating DNS resolvers to Cloudflare 1.1.1.1 or Google 8.8.8.8.

If our plugins display a `java.net.UnknownHostException` in the console during startup, your server is failing to translate our licensing server's domain name into an IP address.

This is an issue with your host's DNS resolver configuration.

## How to Fix DNS Resolution Issues

### Changing Your DNS Resolvers (Linux)

You can force your server to use reliable, public DNS resolvers like Cloudflare (`1.1.1.1`) or Google (`8.8.8.8`).

1. Open your `resolv.conf` file:

```bash theme={null}
sudo nano /etc/resolv.conf
```

2. Add the following lines at the very top of the file:

```text theme={null}
nameserver 1.1.1.1
nameserver 8.8.8.8
```

3. Save and exit (Ctrl+O, Enter, Ctrl+X). Restart your Minecraft server.

### Changing Your DNS Resolvers (Windows Server)

1. Open **Control Panel > Network and Internet > Network and Sharing Center**.
2. Click on your active connection and select **Properties**.
3. Select **Internet Protocol Version 4 (TCP/IPv4)** and click **Properties**.
4. Check **Use the following DNS server addresses** and enter:
   * Preferred: `1.1.1.1`
   * Alternate: `8.8.8.8`
5. Click **OK** and restart your Minecraft server.