Two Machine Config throws "Forbidden You do not have authorization to access this server." when trying to access IWP page
Operating system version
Windows Server 2008 R2 Datacenter SP1
Description of the issue
When browsing to the IWP URL of the web server (eg. http://10.10.0.1/fmi/iwp/) in either a two machine or two machine alternative configuration the browser reports a message "Forbidden You do not have authorization to access this server." The forbidden page is being generated by FileMaker Server after looking at the source HTML. Both machines in the configuration work successfully in single machine config.
My guess is that it has something to do with the OS configuration or 3rd party software installed by the vendor who created the server but I can't nail it down.
The only 3rd party software is:
AWS Tools for Windows
Citrix Tools for Virtual Machines
UniversalForwarder by Splunk Inc. (Checked the ports on this one, and they don't overlap.)
The servers are hosted at AWS and we have confirmed both machines software firewalls are off and the following TCP ports are open (bi-directionally) between the servers which are on different routers::
-Checked a netstat -an too and the proper ports are listening/established.
-Also, the WAS service reports a warning and error in the windows system log that could be related:
Log Name: System
Event ID: 5189
The Windows Process Activation Service failed to generate an application pool config file for application pool 'DefaultAppPool'. The error type is '7'. To resolve this issue, please ensure that the applicationhost.config file is correct and recommit the last configuration changes made. The data field contains the error number.
Log Name: System
Event ID: 5009
Task Category: None
A process serving application pool 'DefaultAppPool' terminated unexpectedly. The process id was '564'. The process exit code was '0xff'.
Steps to reproduce the problem
Go to IWP url
See web start page with database listing
Unable to browse to site, get 403 error.
Exact text of any error message(s) that appear
"Forbidden You do not have authorization to access this server."
Amazon Web Services server.
Windows 2008 R2 Datacenter SP1.
java 6 update 37
visual C++ ver 9.0.30729
FMS Two machine alternative and two machine regular both with SSL and without.
Single machine config