mysql 5.7.11 winx64 initial password change

#####################Configuration file begins################### 
 
 # For advice on how to change settings please see 
 
 # http://dev.mysql.com/doc/refman/5.7/en/server-configuration-defaults.html 
 
 # *** DO NOT EDIT THIS FILE. It's a template which will be copied to the 
 
 # *** default location during installation, and will be replaced if you 
 
 # *** upgrade to a newer version of MySQL. 
 
 [client] 
 
 default-character-set=utf8 
 
 
 
 [mysqld] 
 
 port=3306 
 # D:\Program Files\mysql-5.7.11-winx64\mysql-5.7.11-winx64 
 basedir="D:\Program Files\mysql-5.7.11-winx64\mysql-5.7.11-winx64/" 
 
 datadir = "D:\Program Files\mysql-5.7.11-winx64\mysql-5.7.11-winx64/data/" 
 
 tmpdir = "D:\Program Files\mysql-5.7.11-winx64\mysql-5.7.11-winx64/data/" 
 
 socket = "D:\Program Files\mysql-5.7.11-winx64\mysql-5.7.11-winx64/data/mysql.sock" 
 
 log-error="D:\Program Files\mysql-5.7.11-winx64\mysql-5.7.11-winx64/data/mysql_error.log" 
 
 
 
 #server_id = 2 
 
 #skip-locking 
 
 
 
 max_connections=100 
 
 table_open_cache=256 
 
 query_cache_size=1M 
 
 
 
 tmp_table_size=32M 
 
 thread_cache_size=8 
 
 
 
 innodb_data_home_dir="D:\Program Files\mysql-5.7.11-winx64\mysql-5.7.11-winx64/data/" 
 
 innodb_flush_log_at_trx_commit = 1 
 
 innodb_log_buffer_size=128M 
 
 innodb_buffer_pool_size=128M 
 
 innodb_log_file_size=10M 
 
 innodb_thread_concurrency=16 
 
 innodb-autoextend-increment=1000 
 
 join_buffer_size = 128M 
 
 sort_buffer_size = 32M 
 
 read_rnd_buffer_size = 32M 
 
 max_allowed_packet = 32M 
 
 explicit_defaults_for_timestamp=true 
 
 sql-mode="STRICT_TRANS_TABLES,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION" 
 
 skip-grant-tables 
 
 
 
####################End of configuration file################### 

net start mysql 

mysql -u root -p 

use mysql

update user set authentication_string=password("123456") where user="root";

flush privileges;