Note: Follow all steps for fixing MySQL Problem (Do not skip anything)
1 - Download Newest Version Of MySQL Here
2 - Download Suggested Artifact Server Here
3 - Delete Your Server Cache And Make Sure About Your HeidiSQL (User,Password and more…)
4 - Reinstall HeidiSQL And Your Database
5 - Add this line On Server.cfg :
set mysql_connection_string "server=127.0.0.1;database=essentialmode;userid=root;keepAlive=60"
6 - Make Sure About Database name : FXServer / essentialmode -
Userid : root
7 - Remove Password On Your Database If You Using Passwords!
Good Luck!