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Authentication protocol error message during installation


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I get this when running the /cataog/install/index.php script on step 1. I have MYSql 4.1, PHP 4.3, Apache 2 and Redhat Linux 8.0, anyone ever seen this:


Step 1: Database Import


A test connection made to the database was NOT successful.


The error message returned is:


Client does not support authentication protocol requested by server. Consider upgrading MySQL client


Did I not install mysql with some flag set or something? Is there another download I need?

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  • 1 year later...

Hi there,


This one helped me with MySQL 4.1-gamma.


Enter this in your MySQL console:

1. use mysql;

2. UPDATE user SET password = old_password('password') WHERE user = 'user';



Afterwards it should work.




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