"ERROR 1396 (HY000): Operation CREATE USER failed f" code example

Example 1: 1396(hy00) mysql error

grant all privileges on *.* to 'someuser'@'localhost' with grant option;

Example 2: 1396(hy00) mysql error

create user 'someuser'@'localhost' identified by 'somepassword';
ERROR 1396 (HY000): Operation CREATE USER failed for 'someuser'@'localhost'