If you're mining Monero or a similar coin like Aeon using something like xmrig, you need to update your miners to a newer xmrig version which supports the new PoW algorithm RandomX before November 30, 2019 otherwise you will be kicked off the network. 

The latest release of xmrig can be found here https://github.com/xmrig/xmrig/releases 

If you are new to mining with xmrig, here is a sample config file and a sample command from the command line 

{
    "donate-level": 0,
    "cpu": true,
    "opencl": false,
    "cuda": true,
    "pools": [
        {
            "coin": null,
            "algo": null,
            "url": "monerohash.com:5555",
            "user": "44BYpReUCNHggQLz61ANAXjKJCYtMjijBchv6g8H1kzkT1CyS9kTmRv9fwhPQjZNJXgNcBypkj39yGjPVmpkjzy58hV91ia",
            "pass": "x",
            "tls": false,
            "keepalive": true,
            "nicehash": false
        }
    ]
}

xmrig.exe --donate-level 0 --cuda -o monerohash.com:5555 -u 44BYpReUCNHggQLz61ANAXjKJCYtMjijBchv6g8H1kzkT1CyS9kTmRv9fwhPQjZNJXgNcBypkj39yGjPVmpkjzy58hV91ia -k

If you need any help with mining, don't hesitate to reach out!