I got an issue with cgminer constantly rejecting shares. How can I fix it?

Here's example rejection (note that Diff jumps - sometimes it's 6/1 sometimes it's 1/1) :

[2013-04-09 14:24:05] Rejected fe26cac1 Diff 4/1 GPU 0 (lowdifficulty)

Here's the .bat file I use:

cgminer --scrypt -o eu-stratum.btcguild.com:3333 -u MyUser -p 123

My OS is Win 7 32 bit.

  • What is your share difficulty set to in the btcguild settings?
    – Compro01
    Commented Apr 9, 2013 at 16:48
  • Under 2 GH/s (I got weak PC here where I try to set it up) Commented Apr 10, 2013 at 8:20
  • I just tried 8-16 and 16-32 - both fail with the same result. What's weird is that I have cgminer setup on another PC with much better GPU and it works flawlessly there with difficulty set to 8-16. Commented Apr 10, 2013 at 8:40
  • To closevoters: this question is on topic as per the current FAQ. If we want it to be off-topic we should clarify the wording there. Commented Apr 29, 2013 at 21:07

1 Answer 1


I had this issue also the fix for me was adding--scrypt -o to the beginning so it look like this :

--scrypt -o stratum+tcp://stratum.scryptguild.com:3333 -u iwantcoins_nick -p nopw --load-balance

  • Also worth trying to tune your other GPU settings, this will increase your hashrate, and hopefully reduce your rejected share rate.
    – hafnero
    Commented Mar 22, 2014 at 7:15

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.