Ethereum RPC Error: Incorrect RPC User or Password

As an Ethereum user, you may have encountered an error message when trying to use the bitcoin-cli command. The error message “incorrect rpcuser or rpcpassword (authorization error)” indicates that your username or password for the Ethereum network is incorrect.

This issue can be frustrating, especially if you are new to using Bitcoin or Ethereum. In this article, we will explore what causes this error and provide guidance on how to resolve it.

Understanding RPC Authentication

Ethereum uses a protocol called Remote Procedure Call (RPC) to communicate with nodes on the network. When you use the bitcoin-cli commands, your username and password are sent as an XML-formatted string over the RPC connection. The server then verifies this information against your stored user credentials.

If your username or password is incorrect, the server will reject the authentication request, resulting in the error message “incorrect rpcuser or rpcpassword (authorization error)”.

Troubleshooting steps

To resolve the issue, follow these steps:

1. Check your configuration file

Make sure you have created a bitcoin.conf file in the specified directory (/mnt/btc) with the following content:

[RPC]
rpcuser = [username]
rpcpassword = [password]





Alternatively, use the "default" key for the RPC user and password
rpcuser = default
rpcpassword = 1234567890abcdef

Replace [username] and [password] with your actual Ethereum username and password.

2. Check your username and password

Check that you entered your username and password correctly in the bitcoin.conf file or when starting bitcoin-cli. Make sure that the username and password are entered exactly as they appear in the bitcoin.conf file or when entering them into bitcoin-cli.

3. Run bitcoind -datadir again

Try running bitcoind -datadir=/mnt/btc again to make sure your configuration loads correctly.

4. Check your network connection

Make sure you are connected to the Ethereum network using a stable internet connection and a VPN (if necessary). If you are behind a proxy or firewall, make sure that it is not blocking bitcoin-cli communication.

5. Update Bitcoin-Qt

If you are using a version of Bitcoin-Qt older than 1.29.0-rc.1, update to the latest version:

git clone 
git checkout 1.29.0-rc.1

Then, restart bitcoind:

./bitcoin --datadir=/mnt/btc --force-reload

6. Restart your Bitcoind node

Try restarting your Bitcoin node manually:

bitcoind -force-restart

This will reload the configuration files and restart the node.

Conclusion

If you have followed these steps and are still having issues, there may be other factors at play. You can try:

• Check for updates to bitcoin-cli or bitcoind.

*Check your network connection.

• Restart your Bitcoin node manually.

If you follow these troubleshooting steps, you should be able to resolve the “incorrect rpcuser or rpcpassword (authorization error)” error when using bitcoin-cli.

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