TMG request for authentication dropped/ignored by OSx10.9.4 forcing web page error 407 Authentication Required

Question

Environment
Integrated authentication web access with Windows infrastructure. TMG is the network proxy solution.
Device
Computer used is a MacBook Pro running OSx 10.9.4 with latest safari updates
Problem
MacBook Pro devices experience continued random 407 Authentication Required errors. Replicated across 6 different Apple computers that access the network.
Troubleshooting
Tried multiple network configs (Auto, Config file, Proxy address) with no resolution but same results. Removing all passwords from Keychain and also have network passwords in Keychain make little difference.
Wireshark analysis reveals MacBook Pro is handling .wpad/.pac files successfully but fails to respond to TMG authentication request. In the logs it appears the MacBook ignores the request for username/password.
Notes
By refreshing a failed page the website will load correctly 9/10 after random dropout has happened
iPad connections work seamlessly as long as end user inputs username/password when prompted.

Answer 1

Hi Juan
That does seem like JMS authentication issues, I have had the same in the past, especially when upgrading or copying content between environments. The RequestCenter and ServiceLink configuration is stored in the following files:
\WEB-INF\classes\config\rcjms.properties
\WEB-INF\classes\config\integrationserver.properties
The JBoss username and password are stored in the application-users.properties under \standalone\configuration or \[RequestCenterServer/ServiceLinkeService]\standalone\configuration
depending on your setup, there may be more than one instance of this file depending of if you are running with one JBoss instance or two. The details here are encrypted, to update these configuration files one will have to manually remove all instances of the jmsuser and use the add-user.bat or add-user.sh scripts under \bin to re-create the user, more instructions on this utility can be found in the 9.4.1 (Not R2) installation guides and early as this step was manually done in those versions.