Posts tagged #mysql-bug on the ProxySQL blog.https://proxysql.com/en-ushttps://proxysql.com/blog/how-mysql-bug-102266-affects-proxysql/https://proxysql.com/blog/how-mysql-bug-102266-affects-proxysql/Overview If you are using ProxySQL 2.0.16 in front of MySQL 5.7/5.6 servers or even in front of MySQL 8.0.0, please check your ProxySQL error logs for the message below to ensure that you are not experiencing the MySQL bug #102266: 2021-06-23 02:38:18 MySQL_Session.cpp:2798:handler_again___status_CHANGING_USER_SERVER(): Error during change user: 1045, Access denied for user 'mary'@'172.21 IfMon, 01 Feb 2021 00:00:00 GMTThiago Leite