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

OK, I had this error too. Couldn't find the bug, couldn't find the bug, couldn't find the bug. My "tomcat-users" block looked just like this.

FINALLY FOUND THE BUG. I kept editing the XML inside the XML comment block:

DOH!

So: don't forget to remove the "".