Cannot log into mySQL since 10.3.1 upgrade

[optikhog]

I have several customers getting the following error from their .php code since the 10.3.1 upgrade of Plesk:

"Could not connect: Client does not support authentication protocol requested by server; consider upgrading MySQL client"

When I try to log into mySQL myself using the Plesk admin/password, I get the following:

"ERROR 1045 (28000): Access denied for user 'admin'@'localhost' (using password:YES)"

I've set old_passwords=1 in my.ini and restarted the mySQL service but with no success.

Help?

 

[IgorG]

http://kb.odin.com/en/1561

 

[SvetlanaS]

This is php issue like: http://forums.mysql.com/read.php?11,6400,15334
What php version is specified?

 

[optikhog]

Thank you so much, SvetlanaS - upgrading the sites to PHP 5.x fixed the issue. Funny how the issue had not arisen until the 10.3.1 update from Parallels.