This error usually happens when MelonLoader cannot connect to its servers, so it’s not able to download the required files.
Please check the following:
- Make sure you are connected to the internet
- Try disabling any VPN, firewall, or antivirus temporarily (they can block the connection)
- Run the installer as Administrator
- Try again later in case the server is temporarily unavailable
If the issue still persists, you can try downloading MelonLoader manually from its official source and installing it again.