Operation CREATE USER failed for 'arne'@'%' code example
Example 1: 1396(hy00) mysql error
drop user someuser;
flush privileges;
Example 2: 1396(hy00) mysql error
grant all privileges on *.* to 'someuser'@'localhost' with grant option;
drop user someuser;
flush privileges;
grant all privileges on *.* to 'someuser'@'localhost' with grant option;