This question was closed due to being off-topic, which is fair enough, but I'll add the solution here in case it helps someone:
Change protocol to stratum1+tcp.
I have been using the ethminer client to mine on the binance ether pool.
Around 24 hours ago (16:00 EDT Jun 10th), my worker's reject rate hit 100%
Checking the pool stats at 21:00 EDT, this is what I saw:
Seemingly indicating that there was some kind of widespread issue affecting over half of the pool.
Checking the stats now, you can see that a majority has recovered.
Despite this, I am still getting the issue, and can't find any information about what's going on.
After checking the ethminer output, I noticed all solutions were being rejected. I tried restarting with my usual url:
stratum+tcp://user.001:[email protected]:1800
And repeatedly got this error:
Stratum got invalid Json message : BadHexCharacter
I then tried changing the protocol to stratum2, which stopped that error, but then all solutions were still rejected.
Reject reason : Unspecified
**Rejected 72 ms. ethash.poolbinance.com [172.65.8.243:1800]
This is the command I'm using to run ethminer:
ethminer --cu-devices 0 -P stratum2+tcp://user.001:[email protected]:1800
stratum1+tcp