401 Unauthorized error while logging in Manager-App of Tomcat

Question

I am trying to log in to the Manager App in Tomcat 7.0.22 for Mac OS X 10.7. Here is the error I am getting: http://f.cl.ly/items/421q1K3f1i0X1H1M181v/so.tiff

Answer 1

I tried to add username as tomcat in tomcat-users.xml which was already a role and it was not working. Then I given username as admin for and It worked fine..:)