I have a machine ( on a local network serving Electrs that's syncd to the tip (netstat -ntlp shows that electrs listening on But I have another machine ( using SparrowWallet/ElectrumWallet that cannot connect to the machine hosting Electrs (e.g ./ElectrumWallet --server will not connect/ SparrowWallet shows connection refused), what could be the problem? I am also wondering if using electrs as a trezor backend requires encryption or it can be running unencrypted

1 Answer 1


You might need to add this into your Electrum Server config file:

  • I assume you meant the config file provided when you start up the electrs binary (which is in my ~/.electrs/electrs.config) but I did make that change and it didn't seem to help
    – BillyT
    Commented Dec 16, 2023 at 19:32
  • @BillyT Did you restarted the electrs after the change, right? Weird, I had a similar issue and this fixed for me. What is the output of this command on the other machine $ telnet 50001?
    – jaonoctus
    Commented Dec 16, 2023 at 20:04
  • Unable to connect to remote host: connection refused for telnet on a different device. Though on the same machine hosting electrs I can telnet 50001 and connect
    – BillyT
    Commented Dec 16, 2023 at 20:21
  • Sure, on the same machine it should work. Are you running any firewall like ufw or something like that? If so, enable the port
    – jaonoctus
    Commented Dec 16, 2023 at 21:14
  • 1
    I found the problem, such a stupid mistake. The systemd service I had was running arguments in the execution path which overwrote the config I supplied so nothing was changing, it works fine with, however now I am trying to connect but it's taking a very long time and ends up with Retries exhuasted at least for sparrow wallet, the machine is pretty horrible (old random laptop that even lags when rdp'd into) I assume this is just a hardware problem?
    – BillyT
    Commented Dec 16, 2023 at 22:40

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