#145 can not access magmi

[jmanu]

Hello, I can not access magmi, I have tried "magmi" username and password and I have also tried the password of magento and it does not work.
I have created an htaccess with the following code:
RewriteEngine On
RewriteCond %{HTTP:Authorization} ^(.+)$
RewriteRule .* - [E=HTTP_AUTHORIZATION:%{HTTP:Authorization}]

and it does not work either
I have the folders with permission 755 and the magmi.ini file with the connection correctly made.
i need help please.
thanks!