GUIMiner won't start mining on Slush's pool

  • I started co-mining on Slush's pool successfully for about 48 hours, but from there on I haven't been able to connect to it again. It logs in the console this, no matter if I'm using a valid worker and password or not:

    2013-05-26 12:55:19: Listener for "Default" started
    2013-05-26 12:55:20: Listener for "Default": 26/05/2013 12:55:20, checking for stratum...
    2013-05-26 12:55:20: Listener for "Default": 26/05/2013 12:55:20, started OpenCL miner on platform 0, device 0 (Turks)
    2013-05-26 12:55:20: Listener for "Default": 26/05/2013 12:55:20, no response to getwork, using as stratum
    2013-05-26 12:55:20: Listener for "Default": 26/05/2013 12:55:20,  No JSON object could be decoded
    2013-05-26 12:55:30: Listener for "Default": 26/05/2013 12:55:30, Failed to subscribe
    2013-05-26 12:55:32: Listener for "Default": 26/05/2013 12:55:32, IO errors - 1, tolerance 2
    2013-05-26 12:55:33: Listener for "Default" shutting down

    Of course, I've checked my connection, and I've started GUIMiner with administrator privileges. I'm using Windows 7.

  • zoigo

    zoigo Correct answer

    8 years ago

    The problem is that in GUIMiner, the URL for Slush's pool is:

    That address has been deprecated, and it falls back to the GetWork protocol. From Slush's Pool news:

    Default mining URL for Stratum is If you're still using, please fix your URL to prevent fallback to deprecated Getwork protocol.

    In the GUIMiner interface, instead of choosing "Slush's Pool" from the dropdown menu, choose "other" and then enter


    Nice, it worked!

    Thank you this was verry helpfull, worked for me.

    i had the exact same problem but following ur instructions didnt help me a bit. whats wrong?

    When I tried it with the CPU miner (*not GPU*), ** worked, but ** did **not** work.

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