python - Authentication plugin 'caching_sha2_password' is not supported

Question

I am trying to connect to a MySQL server with python connector. I created a new user lcherukuri with the authentication plugin mysql_native_password.

But I got the error

mysql.connector.errors.NotSupportedError: Authentication plugin 'caching_sha2_password' is not supported

Can someone help me?

import mysql.connector

cnx = mysql.connector.connect(user='lcherukuri', password='password',
                              host='127.0.0.1',
                              database='test')
cnx.close()

Answer 1

Per Caching SHA-2 Pluggable Authentication

In MySQL 8.0, caching_sha2_password is the default authentication plugin rather than mysql_native_password.

You're using mysql_native_password, which is no longer the default. Assuming you're using the correct connector for your version you need to specify the auth_plugin argument when instantiating your connection object

cnx = mysql.connector.connect(user='lcherukuri', password='password',
                              host='127.0.0.1', database='test',
                              auth_plugin='mysql_native_password')

From those same docs:

The connect() method supports an auth_plugin argument that can be used to force use of a particular plugin. For example, if the server is configured to use sha256_password by default and you want to connect to an account that authenticates using mysql_native_password, either connect using SSL or specify auth_plugin='mysql_native_password'.

Answer 2

I had the same problem and passing auth_plugin='mysql_native_password' did not work, because I accidentally installed mysql-connector instead of mysql-connector-python (via pip3). Just leaving this here in case it helps someone.

Answer 3

This question is already answered here and this solution works.

caching sha2 password is not supported mysql

Just try this command :

pip install mysql-connector-python

Answer 4

None of the above solution work for me. I tried and very frustrated until I watched the following video: https://www.youtube.com/watch?v=tGinfzlp0fE

pip uninstall mysql-connector work on some computer and it might not work for other computer.

I did the followings:

The mysql-connector causes problem.

1. pip uninstall mysql-connector

   The following may not need but I removed both connector completely.

2. pip uninstall mysql-connector-python

   re-install mysql-conenct-python connector.

3. pip install mysql-connector-python

Answer 5

I also got a similar error

  File "C:\Users\User\AppData\Local\Programs\Python\Python37-32\lib\site-packages\mysql\connector\authentication.py", line 191, in get_auth_plugin
    "Authentication plugin '{0}' is not supported".format(plugin_name))
mysql.connector.errors.NotSupportedError: Authentication plugin 'caching_sha2_password' is not supported

You have probably installed mysql-connector instead of mysql-connector-python. So you need to install it again for python3:

pip3 install mysql-connector-python

Answer 6

Modify Mysql encryption

ALTER USER 'lcherukuri'@'localhost' IDENTIFIED WITH mysql_native_password BY 'password';

Answer 7

I had this same issue but my resolution was different because this didn't completely work.

I found this on a GitHub forum - copy and paste this into your terminal. You don't have to change your password; it can be the exact same.

ALTER USER 'root'@'localhost' IDENTIFIED BY 'password' PASSWORD EXPIRE NEVER;
ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY '{NewPassword}';

Answer 8

You can go to Settings->Project->Project Interpreter and here install latest version of mysql-connector-python package. In my case it was mysql-connector-python 8.0.15.

Answer 9

To have a more permanent solution without going through your code and modifying whatever needs to be modified: Per MySQL 8 documentation, easiest way to fix this is to add the following to your MySQL d file -> restart MySQL server.

This worked for me!

If your MySQL installation must serve pre-8.0 clients and you encounter compatibility issues after upgrading to MySQL 8.0 or higher, the simplest way to address those issues and restore pre-8.0 compatibility is to reconfigure the server to revert to the previous default authentication plugin (mysql_native_password). For example, use these lines in the server option file:

[mysqld]
#add the following file to your MySQLd file
    default_authentication_plugin=mysql_native_password

Answer 10

Please install below command using command prompt.

pip install mysql-connector-python

Answer 11

Use pip install mysql-connector-python

Then connect like this:

import mysql.connector

mydb = mysql.connector.connect(
  host="localhost",               #hostname
  user="Harish",                   # the user who has privilege to the db
  passwd="Harish96",               #password for user
  database="Factdb",               #database name
    auth_plugin = 'mysql_native_password',

)

Answer 12

For those who couldn't work out because they installed mysql-connector first, I did the following:

1.First on CMD go to the path of 'pip'

2.Use 'pip list' command

3.There would be three packages installed namely six, protobuf and mysql-connector

4.Uninstall each of them separately

5.Now freshly install the mysql-connector-python module

This worked out for me

Answer 13

I was facing the same error for 2 days, then finally I found a solution. I checked for all the installed connectors using pip list and uninstalled all the connectors. In my case they were:

1. mysql-connector
2. mysql-connector-python
3. mysql-connector-python-rf

Uninstalled them using pip uninstall mysql-connector and finally downloaded and installed the mysql-connector-python from MySQL official website and it works well.

Answer 14

pip3 install mysql-connector-python did solve my problem as well. Ignore using mysql-connector module.

Answer 15

pip install -U mysql-connector-python this worked for me, if you already have installed mysql-connector-python and then follow https://stackoverflow.com/a/50557297/6202853 this answer

Answer 16

1. Install mysql connector using the below command.

   pip install mysql-connector-python-rf

2. Use the command to set the privileges.

   ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY 'very_strong_password'; FLUSH PRIVILEGES;

3. Use the python command to connect to mysql database

   mydb = mysql.connector.connect( host="localhost", user="root", passwd="very_strong_password", auth_plugin='mysql_native_password')

Answer 17

I ran into the same problem as well. My problem was, that I accidentally installed the wrong connector version. Delete your currently installed version from your file system (my path looks like this: C:\Program Files\Python36\Lib\site-packages) and then execute "pip install mysql-connector-python". This should solve your problem

Answer 18

i try to resolve this error and finally install PyMySQL instead of mysql library and it's working properly.

thanks.

Answer 19

If you are looking for the solution of following error

ERROR: Could not install packages due to an EnvironmentError: [WinError 5] Acces s is denied: 'D:\softwares\spider\Lib\site-packages\libmysql.dll' Consider using the --user option or check the permissions.

The solution: You should add --user if you find an access-denied error.

 pip install --user mysql-connector-python

paste this command into cmd and solve your problem

Answer 20

I had an almost identical error:

Error while connecting to MySQL: Authentication plugin 'caching_sha2_password' is not supported

The solution for me was simple:

My db username/password creds were incorrect. The error was not descriptive of the problem, so I thought I would share this in case someone else runs into this.

Answer 21

I uninstalled mysql-connector (I installed following tutorial on w3schools tutorial) and installed mysql-connector-python instead. It worked.

Answer 22

Using MySql 8 I got the same error when connecting my code to the DB, using the pip install mysql-connector-python did solve this error.