Server Rejection Error

[Ar4567]

showing that we mined some blocks but server rejected with high-hashrate. Can some help why we get this error

[elda34b]

I assume you're doing a pool mining. Based on this thread it is because you send bad hash of good data or good hash of bad data.[1] You might want to share more details if you want to find the specific reason for your case, and should move this topic to mining section (either Bitcoin or Altcoins).

[1] https://bitcointalk.org/index.php?topic=55991.0