Installation problem with mysql

[Megado]

YaBB SE Version: 1.5.5
PHP Version: 4.3.4
MySQL Version: 4.0.x
Server Platform: Windows 2000, XP, or 2003

Problem Description:
I have problem install YaBB SE via Internet Explorer!

Installer send this kind of message:

Warning: mysql_connect(): Client does not support authentication protocol requested by server; consider upgrading MySQL client in D:\wwwroot2\php\yabbse\install.php on line 357

Cannot connect to database server with given data!

Please check the information you provided, and then try again.

[Chris Cromer]

Sounds like a problem with MySQL, or maybe you filled in the wrong MySQL info on the installation page.

[Megado]

i'd doublecheck those values, and they R correct, but still installation not continue

and while i test different option i'll get this message:

Warning: mysql_connect(): Access denied for user: 'root'@'localhost' (Using password: YES) in D:\wwwroot2\php\yabbse\install.php on line 357

Cannot connect to database server with given data!

Please check the information you provided, and then try again.

root user has all priveledges to use everything on mysql server but still don't work

[Chris Cromer]

According to that error you tried using a password. You do know that by default the password is supposed to be blank right?

Try using the username root and leaving the password field blank and see if that works.

[Megado]

No it's not work, problem is same as before

Warning: mysql_connect(): Access denied for user: 'root'@'localhost' (Using password: YES) in D:\wwwroot2\php\yabbse\install.php on line 357

Cannot connect to database server with given data!

Please check the information you provided, and then try again.

[Chris Cromer]

That error says that you did try to use a password:

Using password: YES

[Megado]

IIS5
Mysql 5.0
PHP 4.3.4

[Chris Cromer]

MySQL 5? You must be nuts to be using that. That is a development version heck MySQL 4.1 is still alpha... much less MySQL 5.

That "could" be your problem although I am not sure.

Are you 100% positive that you left the password field blank because that error says that you didn't leave it blank.

[Megado]

Yes I am very sure that i leave blank that password field
well im test that 4.1.1-alpha release of MYSQL

[Megado]

now i have 4.1.1a-alpha release of Mysql but now same problem!

Warning: mysql_connect(): Access denied for user: 'root'@'localhost' (Using password: NO) in C:\yabbse\yabbse\install.php on line 357

Cannot connect to database server with given data!

Please check the information you provided, and then try again.

[Chris Cromer]

Well at least now the error is correct, it says "NO" for the password instead of "YES".

Have you changed the mysql password and such or changed the root users permissions or the root user in anyway?

[Megado]

everything i do in prompt tells me that " acces denied...
i'd change root password for my own...but i can log in prompt to root user...
going to sleep at the moment

[Megado]

I'm totally out of that install, i cant figure what a hell is a problem... im using Mysql control center to do root permission, and its seem to be OK?

[Chris Cromer]

I am guessing that you must have changed the permissions somehow that so root can't access that db anymore.

By default root is supposed to have access to all db's so you would have had to remove his global permissions.

[Megado]

I did some changes and no it seem to work ok, i'd installed forum and it works how i get finnish language into forum, id try to download that finnish.lng file but my browser just show me text