Can't access mysite.com/admin

Hi, i've downloaded the core + admin plugin, created a new user as specified. I've uploaded all files (incl. .htaccess).

But: mysite.com/admin gives me an 404 error and the folder "admin" doesn't exists on the webserver.

Thanks in advance!

I think that the "admin" folder doesn't exist on the webserver. This is normal.
Have you done the install on a local server?

You have a routing issue. make sure your path is included in .htaccess RewriteBase

For a full list of possible issues check the troubleshooting section of the docs.