403 Access Denied on Tomcat 8 Manager App without prompting for user/password

Question

I have set up tomcat 8 according to this, and I have the following tomcat-users.xml file:

Answer 1

fade's answer worked for me. I moved from 8.0.30 to 8.5.5 and the difference was the valve in <8.0.30>/manager/META-INF/context.xml was already commented out from the tar file but was uncommented in 8.5.5 tar.

I failed to read this important message in the 403 response:

By default the Manager is only accessible from a browser running on the same machine as Tomcat. If you wish to modify this restriction, you'll need to edit the Manager's context.xml file.

And failed to read this too:

Since r1734267 a RemoteAddrValve.is configured by default in Manager and HostManager web applications. This feature is present in 9.0.0.M4 and 8.5.0 onwards.

https://bz.apache.org/bugzilla/show_bug.cgi?id=59672