MySQL ERROR 1045 28000 Access denied for user bill localhost using password YES

Question

First let me mention that I ve gone through many suggested questions and found no relevent answer  Here is what I m doing   I m connected to my Amazon EC2 instance  I can login with MySQL root with this command   mysql -u root -p   Then I created a new user bill with host     CREATE USER  bill      IDENTIFIED BY  passpass     Granted all the privileges to user bill   grant all privileges on     to  bill      with grant option    Then I exit from root user and try to login with bill   mysql -u bill -p   entered the correct password and got this error      ERROR 1045  28000   Access denied for user  bill   localhost   using password  YES

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Also the problem can occur if you are using old version of the MySQL UI  like SQLYoug  that generates passwords with wrong hash   Creating user with SQL script will fix the problem

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It s a difference between   CREATE USER  bill      IDENTIFIED BY  passpass     and   CREATE USER  bill   localhost  IDENTIFIED BY  passpass     Check it   mysql gt  select user host from mysql user   --------------- ----------------------------    user            host                          --------------- ----------------------------    bill                                          lt     created by first   root            127 0 0 1                      root              1                            root            localhost                      bill            localhost                     lt     created by second  --------------- ----------------------------    The command   mysql -u bill -p   access implicit to  bill   localhost  and NOT to  bill        There are no permissions for  bill   localhost   you get the error   ERROR 1045  28000   Access denied for user  bill   localhost   using password  YES    solving the problem   CREATE USER  bill   localhost  IDENTIFIED BY  passpass    grant all privileges on   to  bill   localhost  with grant option

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You probably have an anonymous user     localhost  or     127 0 0 1    As per the manual      When multiple matches are possible  the server must determine which of   them to use  It resolves this issue as follows                When a client attempts to connect  the server looks through the rows  of table mysql user  in sorted order    The server uses the first row that matches the client host name and user name                  The server uses sorting rules that order rows with the most-specific Host values first    Literal host names  such as  localhost   and IP addresses are the most specific    Hence  such an anonymous user would  mask  any other user like   any username       when connecting from localhost    bill   localhost  does match  bill       but would match  e g       localhost  beforehands   The recommended solution is to drop this anonymous user  this is usually a good thing to do anyways      Below edits are mostly irrelevant to the main question  These are only meant to answer some questions raised in other comments within this thread   Edit 1  Authenticating as  bill      through a socket         root myhost  home mysql-5 5 16-linux2 6-x86 64    mysql -ubill -ppass --socket  tmp mysql-5 5 sock     Welcome to the MySQL monitor            mysql  SELECT user  host FROM mysql user       ------ -----------        user   host             ------ -----------        bill                     root   127 0 0 1         root     1               root   localhost        ------ -----------      4 rows in set  0 00 sec       mysql  SELECT USER    CURRENT USER         ---------------- ----------------        USER             CURRENT USER          ---------------- ----------------        bill localhost   bill                  ---------------- ----------------      1 row in set  0 02 sec       mysql  SHOW VARIABLES LIKE  skip networking        ----------------- -------        Variable name     Value        ----------------- -------        skip networking   ON           ----------------- -------      1 row in set  0 00 sec     Edit 2  Exact same setup  except I re-activated networking  and I now create an anonymous  user     localhost          root myhost  home mysql-5 5 16-linux2 6-x86 64    mysql     Welcome to the MySQL monitor            mysql  CREATE USER     localhost  IDENTIFIED BY  anotherpass       Query OK  0 rows affected  0 00 sec       mysql  Bye      root myhost  home mysql-5 5 16-linux2 6-x86 64    mysql -ubill -ppass           --socket  tmp mysql-5 5 sock     ERROR 1045  28000   Access denied for user  bill   localhost   using password  YES      root myhost  home mysql-5 5 16-linux2 6-x86 64    mysql -ubill -ppass           -h127 0 0 1 --protocol TCP     ERROR 1045  28000   Access denied for user  bill   localhost   using password  YES      root myhost  home mysql-5 5 16-linux2 6-x86 64    mysql -ubill -ppass           -hlocalhost --protocol TCP     ERROR 1045  28000   Access denied for user  bill   localhost   using password  YES     Edit 3  Same situation as in edit 2  now providing the anonymous user s password         root myhost  home mysql-5 5 16-linux2 6-x86 64    mysql -ubill -panotherpass -hlocalhost     Welcome to the MySQL monitor            mysql  SELECT USER    CURRENT USER         ---------------- ----------------        USER             CURRENT USER          ---------------- ----------------        bill localhost    localhost            ---------------- ----------------      1 row in set  0 01 sec     Conclusion 1  from edit 1  One can authenticate as  bill     through a socket   Conclusion 2  from edit 2  Whether one connects through TCP or through a socket has no impact on the authentication process  except one cannot connect as anyone else but  something   localhost  through a socket  obviously    Conclusion 3  from edit 3  Although I specified -ubill  I have been granted access as an anonymous user  This is because of the  sorting rules  advised above  Notice that in most default installations  a no-password  anonymous user exists  and should be secured removed

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If you forget your password or you want to modify your password You can follow these steps       1  stop your mysql            root maomao     service mysqld stop     Stopping MySQL                                                OK            2  use     --skip-grant-tables    to restart mysql            root mcy400     mysqld safe --skip-grant-tables       root cy400     Starting mysqld daemon with databases from  var lib mysql         3   open a new window and input mysql -u root            root cy400     mysql -u root      Welcome to the MySQL monitor   Commands end with   or  g          4   change the user database           mysql  use mysql      Reading table information for completion of table and column names     You can turn off this feature to get a quicker startup with -A     Database changed         5   modify your password your new password should be input in                mysql  update user set password password  root123   where user  root        Query OK  3 rows affected  0 00 sec       Rows matched  3  Changed  3  Warnings  0         6   flush           mysql  flush privileges          7  quit           mysql  quit      Bye         8  restart mysql            root cy400     service mysqld restart       Stopping MySQL                                                OK         Starting MySQL                                                OK         Bingo  You can connect your database with your username and new password    root cy400     mysql -u root -p  lt br gt  Enter password  admin123  lt br gt  Welcome to the MySQL monitor   Commands end with   or  g   lt br gt  Your MySQL connection id is 2  lt br gt  Server version  5 0 77 Source distribution  lt br gt  Type  help   or   h  for help  Type   c  to clear the buffer   lt br gt  mysql gt  quit  lt br gt  Bye

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Save yourself of a MAJOR headache    Your problem might be that you are missing the quotes around the password  At least that was my case that detoured me for 3 hours    client  user   myusername password    mypassword       lt ----------------------- VERY IMPORTANT  quotes  host   localhost   http   dev mysql com doc refman 5 7 en option-files html  Search for  Here is a typical user option file   and see the example they state in there  Good luck  and I hope to save someone else some time

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The best solution i found for myself is   my user is sonar and whenever i am trying to connect to my database from external or other machine i am getting error as   ERROR 1045  28000   Access denied for user  sonar   localhost   using password  YES    Also as i am trying this from another machine and through Jenkins job my URL for accessing is   alm-lt-test xyz com   if you want to connect remotely you can specify it with different ways as follows   mysql -u sonar -p -halm-lt-test xyz com mysql -u sonar -p -h101 33 65 94 mysql -u sonar -p -h127 0 0 1 --protocol TCP mysql -u sonar -p -h172 27 59 54 --protocol TCP   To access this with URL you just have to execute the following query   GRANT ALL ON sonar   TO  sonar   localhost  IDENTIFIED BY  sonar   GRANT ALL ON sonar   TO  sonar   alm-lt-test xyz com  IDENTIFIED BY  sonar   GRANT ALL ON sonar   TO  sonar   127 0 0 1  IDENTIFIED BY  sonar   GRANT ALL ON sonar   TO  sonar   172 27 59 54  IDENTIFIED BY  sonar

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OS  windows   My error message is      MySQL ERROR 1045  28000   Access denied for user  root   localhost   using password  YES    My reason is that I didn t open cmd with administrator permissions   So my solution was to open cmd as administrator  then it worked

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I discovered yet another case that appears on the surface to be an edge case  I can export to the file system  via SELECT INTO    OUTFILE as root  but not as regular user  While this may be a matter of permissions  I ve looked at that  and see nothing especially obvious  All I can say is that executing the query as a regular user who has all permissions on the data base in question returns the access denied error that led me to this topic  When I found the transcript of a successful use of SELECT INTO     OUTFILE in an old project  I noticed that I was logged in as root  Sure enough  when I logged in as root  the query ran as expected

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A related problem in my case was trying to connect using    mysql -u mike -p mypass   Whitespace IS apparently allowed between the -u  uname  but NOT between the -p and  password   Therefore needed   mysql -u mike -pmypass   Otherwise with white-space between -p mypass mysql takes  mypass  as the db name

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Not sure if anyone else will find this helpful  but I encountered the same error and searched all over for any anonymous users   and there weren t any  The problem ended up being that the user account was set to  Require SSL  - which I found in PHPMyAdmin by going to User Accounts and clicking on Edit Privileges for the user  As soon as I unchecked this option  everything worked as expected

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For me  this problem was caused by a new feature of MySQL 5 7 2  user entries are ignored if their plugin field is empty   Set it to e g  mysql native password to reenable them   UPDATE user SET plugin  mysql native password  WHERE user  foo   FLUSH PRIVILEGES    See the release notes for MySQL 5 7 2  under   Authentication Notes     For some reason  maybe because my pre-4 1 password hashes were removed   the mysql upgrade script didn t set a default plugin value   I found out by noticing the following warning message in  var log mysql error log       Warning  User entry  foo      has an empty plugin value  The user will  be ignored and no one can login with this user anymore    I post this answer here to maybe save someone from using the same ridiculous amount of time on this as I did

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This also happens when your password contains some special characters like     etc  To avoid this situation you can wrap password in single quotes     mysql -usomeuser -p s0mep   w0Rd    Or instead don t use password while entering  Leave it blank and then type it when terminal asks  This is the recommended way     mysql -usomeuser -p Enter password  Welcome to the MySQL monitor   Commands end with   or  g  Your MySQL connection id is 191 Server version  5 5 46-0ubuntu0 14 04 2  Ubuntu   Copyright  c  2000  2015  Oracle and or its affiliates  All rights reserved   Oracle is a registered trademark of Oracle Corporation and or its affiliates  Other names may be trademarks of their respective owners   Type  help   or   h  for help  Type   c  to clear the current input statement   mysql gt

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When you ran   mysql -u bill -p   and got this error  ERROR 1045  28000   Access denied for user  bill   localhost   using password  YES    mysqld is expecting you to connect as bill localhost  Try creating bill localhost  CREATE USER bill localhost IDENTIFIED BY  passpass   grant all privileges on     to bill localhost with grant option    If you want to connect remotely  you must specify either the DNS name  the public IP  or 127 0 0 1 using TCP IP   mysql -u bill -p -hmydb mydomain com mysql -u bill -p -h10 1 2 30 mysql -u bill -p -h127 0 0 1 --protocol TCP   Once you login  please run this  SELECT USER   CURRENT USER      USER   reports how you attempted to authenticate in MySQL  CURRENT USER   reports how you were allowed to authenticate in MySQL from the mysql user table  This will give you a better view of how and why you were allowed to login to mysql  Why is this view important to know  It has to do with the user authentication ordering protocol   Here is an example  I will create an anonymous user on my desktop MySQL   mysql gt  select user host from mysql user   --------- -----------    user      host         --------- -----------    lwdba                   mywife                  lwdba     127 0 0 1     root      127 0 0 1     lwdba     localhost     root      localhost     vanilla   localhost    --------- -----------  7 rows in set  0 00 sec   mysql gt  grant all on     to x      Query OK  0 rows affected  0 02 sec   mysql gt  select user host from mysql user   --------- -----------    user      host         --------- -----------    lwdba                   mywife                  x                       lwdba     127 0 0 1     root      127 0 0 1     lwdba     localhost     root      localhost     vanilla   localhost    --------- -----------  8 rows in set  0 00 sec   mysql gt  update mysql user set user    where user  x   Query OK  1 row affected  0 00 sec  Rows matched  1  Changed  1  Warnings  0  mysql gt  flush privileges  Query OK  0 rows affected  0 01 sec   mysql gt  select user host from mysql user   --------- -----------    user      host         --------- -----------                            lwdba                   mywife                  lwdba     127 0 0 1     root      127 0 0 1     lwdba     localhost     root      localhost     vanilla   localhost    --------- -----------  8 rows in set  0 00 sec   mysql gt    OK watch me login as anonymous user   C  MySQL 5 5 12 gt mysql -urol -Dtest -h127 0 0 1 --protocol TCP Welcome to the MySQL monitor   Commands end with   or  g  Your MySQL connection id is 12 Server version  5 5 12-log MySQL Community Server  GPL   Copyright  c  2000  2010  Oracle and or its affiliates  All rights reserved   Oracle is a registered trademark of Oracle Corporation and or its affiliates  Other names may be trademarks of their respective owners   Type  help   or   h  for help  Type   c  to clear the current input statement   mysql gt  select user   current user     --------------- ----------------    user            current user      --------------- ----------------    rol localhost                     --------------- ----------------  1 row in set  0 00 sec   mysql gt    Authentication ordering is very strict  It checks from the most specific to the least  I wrote about this authentiation style in the DBA StackExchange   Don t forget to explicitly call for TCP as the protocol for mysql client when necessary

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This may apply to very few people  but here goes  Don t use an exclamation   in your password   I did and got the above error using MariaDB  When I simplified it to just numbers and letters it worked  Other characters such as   and   work fine - I used those characters in a different user on the same instance   The fifth response at this address led me to my fix

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I had the same problem  but in my case the solution was solved by the comment by eggyal   I had an anonymous user as well  but removing it didn t solve the problem   The  FLUSH PRIVILEGES  command worked though    The surprising thing to me about this was that I created the user with MySQL Workbench and I would have expected that to perform all of the necessary functions to complete the task

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Try      mysql -u root -p Enter Password   mysql gt  grant all privileges on     to bill localhost identified by  pass  with grant option

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If your dbname  username  password  etc strings lengths exceed values outlined at https   dev mysql com doc refman 5 7 en grant-tables html grant-tables-scope-column-properties   you might also fail to log in  as this was in my case

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For me root had a default password i changed the password using ALTER USER  root   localhost  IDENTIFIED BY  new Password   and it worked

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I resolved this by deleting the old buggy user  bill  entries  this is the important part  both from mysql user and mysql db   then created the same user as sad before   FLUSH PRIVILEGES  CREATE USER bill localhost IDENTIFIED BY  passpass   grant all privileges on     to bill localhost with grant option  FLUSH PRIVILEGES    Worked  user is connecting  Now I ll remove some previlegies from it

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I hope you have not done more damage by also deleting the debian-sys-maint user in mysql   Have your mysql daemon running the normal way  Start your mysql client as shown below  mysql -u debian-sys-maint -p   In another terminal  cat the file  etc mysql debian cnf  That file contains a password  paste that password when prompted for it   http   ubuntuforums org showthread php t 1836919

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On Windows  here s how to resolve      ERROR 1045  28000   Access denied for user  root   localhost   using password  NO     Uninstall mysql from the control panel Delete the MySql folder from C  Program Files C  Program Files  x86  and C  ProgramData Install mysql

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Be sure there are no other SQL instances running that are using the localhost post  In our case another instance was running on the localhost that conflicted with the login  Turning it off solved this problem

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I had a somewhat similar problem - on my first attempt to enter MySQL  as root  it told me access denied  Turns out I forgot to use the sudo      So  if you fail on root first attempt  try   sudo mysql -u root -p   and then enter your password  this should work

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I had similar problems because my password contains     char breaking my password when I creates it at first moment  Caution with this if can help you

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Nowadays  Solution for        MySQL ERROR 1045  28000   Access denied for user  user   localhost     using password  YES     Wampserver 3 2 0 new instalation or upgrading   Probably xamp using mariaDB as default is well   Wamp server comes with mariaDB and mysql  and instaling mariaDB as default on 3306 port and mysql on 3307  port sometimes 3308   Connect to mysql   On instalation it asks to use mariaDB or MySql  But mariaDB is checked as default and you cant change it  check mysql option and install   when instalation done both will be runing mariaDB on default port 3306 and mysql on another port 3307 or 3308   Right click on wampserver icon where its runing should be on right bottom corner  goto tools and see your correct mysql runing port   And include it in your database connection same as folowng     host    localhost    db      test    user    root    pass        charset    utf8mb4    port    3308    Port   dsn    mysql host  host dbname  db port  port charset  charset     Add in connection  options         PDO  ATTR ERRMODE              gt  PDO  ERRMODE EXCEPTION      PDO  ATTR DEFAULT FETCH MODE   gt  PDO  FETCH ASSOC      PDO  ATTR EMULATE PREPARES     gt  false     try         pdo   new PDO  dsn   user   pass   options     catch   PDOException  e         throw new  PDOException  e- gt getMessage     int  e- gt getCode         Note   I am using pdo   See here for more   https   sourceforge net projects wampserver

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This may also happen if MySQL is running on a case-insensitive OS  such as Windows   e g  I found that attempting to connect to a database using these credentials failed   mysql  grant select on databaseV105   to  specialuser  identified by  s3curepa5wrd      mysql -specialuser  -p s3curepa5wrd  -h10 61 130 89 databaseV105     ERROR 1045  28000   Access denied for user  specialuser   10 0 1 113   using password  YES    But  this succeeded   mysql  grant select on databasev105   to  specialuser  identified by  s3curepa5wrd      mysql -specialuser  -h10 300 300 400 databaseV105 -p     Enter password

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Okay  I m not sure but probably this is my cnf file inside mysql installation directory is the culprit  Comment out this line and the problem might be resolved   bind-address   127 0 0 1

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For me  It was not specifying the -p parameter when entering mysql  mysql -p  I had no problem  but it was wrong to invoke mysql without a password

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just remove password Change this mydb   mysql connector connect host  quot localhost quot  user  quot root quot  password  password  auth plugin  mysql native password    To this mydb   mysql connector connect host  quot localhost quot  user  quot root quot  auth plugin  mysql native password    It worked for me

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The solution is to  delete the anonymous  Any  user   I also faced the same issue on a server setup by someone else  I normally don t choose to create an anonymous user upon installing MySQL  so hadn t noticed this  Initially I logged in as  root  user and created a couple of  normal  users  aka users with privileges only on dbs with their username as prefix   then logged out  then went on to verify the first normal user  I couldn t log in  Neither via phpMyAdmin  nor via shell  Turns out  the culprit is this  Any  user

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Update  On v8 0 15  maybe this version  the PASSWORD   function does not work   You have to    Make sure you have Stopped MySQL first   Run the server in safe mode with privilege bypass  sudo mysqld safe --skip-grant-tables Login  mysql -u root mysql  UPDATE mysql user SET authentication string null WHERE User  root   mysql  FLUSH PRIVILEGES  mysql  exit   Login again  mysql -u root mysql  ALTER USER  root   localhost  IDENTIFIED WITH caching sha2 password BY  yourpasswd

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I encountered the same error  The setup that wasn t working is as follows   define  HOSTNAME    localhost    define  HOSTUSER    van    define  HOSTPASS    helsing    define  DBNAME    crossbow     connection   mysqli connect HOSTNAME  HOSTUSER  HOSTPASS     The edited setup below is the one that got it working  Notice the difference   define  HOSTNAME    localhost    define  HOSTUSER    van    define  HOSTPASS    helsing    define  DBNAME    crossbow     connection   mysqli connect HOSTNAME  HOSTUSER  HOSTPASS     The difference is the double quotes  They seem to be quite significant in PHP as opposed to Java and they have an impact when it comes to escaping characters  setting up URLs and now  passing parameters to a function  They re prettier  I know  but always use single quotes as much as possible then double quotes can be nested within those if necessary    This error came up when I tested my application on a Linux box as opposed to a Windows environment

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The percent sign means all ip s so localhost is superfluous     There is no need of the second record with the localhost    Actually there is   localhost  is special in mysql  it means a connection over a unix socket  or named pipes on windows I believe  as opposed to a TCP IP socket  using   as the host does not include  localhost   MySQL user accounts have two components  a user name and a host name  The user name identifies the user  and the host name specifies what hosts that user can connect from  The user name and host name are combined to create a user account     lt user name gt     lt host name gt   You can specify a specific IP address or address range for host name  or use the percent character       to enable that user to log in from any host    Note that user accounts are defined by both the user name and the host name  For example   root      is a different user account than  root   localhost

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When you type mysql -u root -p   you re connecting to the mysql server over a local unix socket    However the grant you gave   bill      only matches TCP IP connections curiously enough   If you want to grant access to the local unix socket  you need to grant privileges to  bill   localhost    which curiously enough is not the same as  bill   127 0 0 1   You could also connect using TCP IP with the mysql command line client  as to match the privileges you already granted  e g  run mysql -u root -p -h 192 168 1 123 or whichever local IP address your box have

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Just wanted to let you know a unusual circumstance I received the same error  Perhaps this helps someone in the future   I had developed a few base views  created at the development site and transferred them to the production-site  Later that week I changed a PHP script and all of a sudden errors came up that Access was denied for user  local-web-user   localhost   The datasource object had not changed  so I concentrated on the database user in MySQL  worrying  in the meantime someone hacked my website  Luckily the rest of the site seemed unharmed   It later turned out that the views were the culprit s   Our object transfers are done using another  and remote  admin ip-address  user than the local website user  So the views were created with  admin   ip-address  as the definer  The view creation SECURITY default is   SQL SECURITY DEFINER   When local-web-user tries to use the view it stumbles on the lacking privileges of the definer to use the tables  Once security was changed to    SQL SECURITY INVOKER   the issue was resolved  The actual problem was completely different than anticipated based on the error message

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MySQL account names consist of a user name and a host name  The name  localhost  in host name  indicates the local host also You can use the wildcard characters         and         in host name or IP address values  These have the same meaning as for pattern-matching operations performed with the LIKE operator  For example  a host value of     matches any host name  whereas a value of    mysql com  matches any host in the mysql com domain   192 168 1    matches any host in the 192 168 1 class C network    Above was just introduction   actually both users  bill   localhost  and  bill      are different MySQL accounts  hence both should use their own authentication details like password   For more information refer http   dev mysql com doc refman  5 5 en account-names html

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When you run mysql -u bill -p  localhost is resolved to your ip  since it is 127 0 0 1 and in your  etc hosts file  as default 127 0 0 1       localhost exists  So  mysql interprets you as bill localhost which is not granted with bill       This is why there are 2 different records for root user in result of select host  user from mysql user  query   There are two ways to handle this issue    One is specifying an ip which is not reversely resolved by  etc hosts file when you try to login  For example  the ip of server is 10 0 0 2  When you run the command mysql -u bill -p -h 10 0 0 2  you will be able to login  If you type select user     you will get bill 10 0 0 2  Of course  any domain name should not be resolved to this ip in your  etc hosts file   Secondly  you need grant access for this specific domain name  For bill localhost  you should call command grant all privileges on     to bill localhost identified by  billpass     In this case  you will be able to login with command mysql -u bill -p  Once logined  select user    command returns bill localhost   But this is only for that you try to login a mysql server in the same host  From remote hosts  mysql behaves expectedly      will grant you to login

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For Mac users if they still have the problem  as was my case   I found this solution worked for me  MySQL command line  -bash command not found   To use command i e  mysql on macbook terminal you need to export path using   export PATH  PATH  usr local mysql bin    Considering default installation  use following command to get mysql prompt as root user   mysql -u root   Otherwise you are using wrong root password   Ref  Setting the MySQL root user password on OSX

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Super late to this  I tried all of these other answers and ran many different versions of mysql -u root -p but never just ran     mysql -u root -p   And just pressing  ENTER  for the password      Once I did that it worked  Hope this helps someone

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Debugging Summary   Check for typo error  username or password   Check the host name and compare it with mysql user table host name   Check user exists or not   Check whether host contains IP address or host name    There is a great chance that  you might have encountered this issue multiple times in your work  This issue occurred to me most of times due to the incorrectly entering user name or password  Though this is one of the reasons  there are other many chances you might get this issue  Sometimes  it looks very similar  but when you dig deeper  you will realize multiple factors contributing to this error  This post will explain in detail  most of the common reasons and work around to fix this issue    Possible reasons    Case 1  Typo error  username or password    This is the most common reason for this error  If you entered the username or password wrongly  surely you will get this error   Solution    Solution for this type of error is very simple  Just enter the correct username and password  This error will be resolved  In case if you forget the password you can reset the username password  If you forget the password for admin   root account  there are many ways to reset   recapture the root password  I will publish another post on how to reset the root password in-case if you forget root password    Case 2  Accessing from wrong host    MySQL provides host based restriction for user access as a security features  In our production environment  we used to restrict the access request only to the Application servers  This feature is really helpful in many production scenarios     Solution   When you face this type of issue  first check whether your host is allowed or not by checking the mysql user table  If it is not defined  you can update or insert new record to mysql user table  Generally  accessing as a root user from remote machine is disabled and it is not a best practice  because of security concerns  If you have requirements to access your server from multiple machines  give access only to those machines  It is better not to use wildcards     and gives universal accesses  Let me update the mysql user table  now the demouser can access MySQL server from any host    Case 3  User does not exists on the server    This type of error occurs when the user  which you are trying to access not exist on the MySQL server   Solutions   When you face this type of issue  just check whether the user is exists in mysql user table or not  If the record not exists  user cannot access  If there is a requirement for that user to access  create a new user with that username    Case 4  Mix of numeric and name based hosts    Important points   It is not advisable to use wildcards while defining user host  try to use the exact host name  Disable root login from remote machine  Use proxy user concept    There are few other concepts related with this topic and getting into details of those topics is very different scope of this article  We will look into the following related topics in the upcoming articles    What to do  if you forgot root password in of MySQL server  MySQL Access privilege issues and user related tables  MySQL security features with best practices    I hope this post will help for you to fix the MySQL Error Code 1045 Access denied for user in MySQL

[mysql] MySQL ERROR 1045 (28000): Access denied for user 'bill'@'localhost' (using password: YES)

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