a new error

Author: steveloughran

README.md

@@ -36,6 +36,7 @@ or the YARN scheduler starting to summon pre-human deities.
 1. This is a work in progress book designed to built using the [gitbook tool chain](https://github.com/GitbookIO/gitbook).
 
 1. It is hosted on [github](https://github.com/steveloughran/kerberos_and_hadoop).
+Pull requests are welcome.
 
 1. All the content is Apache licensed.
 
@@ -44,6 +45,6 @@ contract with [Hortonworks](http://hortonworks.com/) then issues related to Kerb
 eventually reach the author. Otherwise: try 
 
       - [Hortonworks Answerhub](https://community.hortonworks.com/answers/index.html)
-      - The users mailing list of Apache Hadoop, the application and you are using on top of it
+      - The users mailing list of Apache Hadoop, the application and you are using on top of it.
       - [Stack Overflow](http://stackoverflow.com/search?q=hadoop+kerberos).
 

sections/acknowledgements.md

@@ -19,3 +19,7 @@
 However, our best praise, our greatest appreciation, has to go to everyone who added logging statements in the Hadoop codepath.
 
 Some of the content in this document was copied from a 2013 presentation by Kevin Minder.
+
+## contributors to this document
+
+* Samson Scharfrichter

sections/errors.md

@@ -443,3 +443,10 @@ javax.security.sasl.SaslException: DIGEST-MD5: No common protection layer betwee
 	at java.lang.reflect.Method.invoke(Method.java:497)
 ```
 
+## On windows: `No authority could be contacted for authentication`
+
+Reported on windows clients, especially related to the Hive ODBC client. This is kerberos, just
+someone else's library.
+
+1. Make sure that your system is happy in the AD realm, etc. Do this first.
+1. Make sure you've configured the ODBC driver [according to the instructions](http://hortonworks.com/wp-content/uploads/2013/04/Hortonworks-Hive-ODBC-Driver-User-Guide.pdf).