tezelcelebi wrote:when I enter the URL it just displays the same message (unauthorized)
This means that the user you are logged in with does not have the correct privileges. If you are logged in with the admin-user it seems that that user somehow lost some of it's privileges.
To reset the admin-user you need to do the following:
1. Stop subsonic
2. locate the folder "db" in your subsonic_home ( probably c:\subsonic\db ) and rename it or delete it.
3. Start subsonic
That should recreate the db with default permissions.
Note! All your settings will be lost if you do this
Now you should be able to log in with the user admin with password admin.
Hope this helps..
Edit: Really weird that this happens when you say you've tried to install on four different systems.. You
are using a default install downloaded from the Subsonic-download links?