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When PHPMYADMIN is used, an error is reported:
Client does not support authentication protocol requested
By server; consider upgrading MySQL client
The official statement is:
MySQL 4.1 and up uses an authentication protocol based on a password hashing algorithm that is incompatible with that used by older clients ......
If you encounter any of the above problems after upgrading mysql to mysql 4.1 or later, make sure that your mysql client is 4.1 or later. (If there is a problem in WINDOWS, you can directly jump to the following to see the solution, because MYSQL is installed with the client and server in WINDOWS)
Use either of the following methods
Mysql> SET PASSWORD
-> 'Some _ user' @ 'some _ host' = OLD_PASSWORD ('newpwd ');
Mysql> UPDATE mysql. user SET Password = OLD_PASSWORD ('newpwd ')
-> WHERE Host = 'some _ host' AND User = 'some _ user ';
Mysql> flush privileges;
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