SQL Server 2014 SSRS Login Prompt won't go away

Question

Hi,
I'm attempting to set up SQL Server Reporting Services on one of my environments.  The architecture is:
Database Server: SQL Server 2014 hosting my databases as well as the ReportServer / ReportServerTempDB databases
SSRS Server: SQL Server 2014 with just SSRS installed, hosting the web front end
I created a new SSRS database using the SSRS configuration manager.
When I log into the website on the local machine (http : // localhost/reports),
I'm prompted for my credentials once and once I authenticate (domain\username), everything works as expected.  However, when I attempt to access the server remotely (either http or https : // reportserver.domain.com/reports)
I'm prompted for my credentials at least 12 times.  If I keep re-entering them, the SQL Server Reporting Services Home folder/website will eventually re-appear, but if I try to navigate, I'm once again prompted for my credentials.
I did some research and verified that my AuthenticationTypes in the rsreportserver.config file was set to only RSWindowsNTLM.
Additional environment info: both servers are hosted on AWS, and we are using an ELB to access the SSRS webserver.  I'm using IE11 to attempt web access.
Thanks!

Answer 1

Hi Rob,
I am not sure why you are using the -A while setting up the SPN, Use  -S to set the SPN and make sure you delete the old one(setspn -D HTTP/<server> domain\user )
Use the following command line to set the SPN
SETSPN –S HTTP/hostname.abc.com:<portnumber> DOMAIN\ServiceAccount
Note: The config file for reporting services also needs to be updated to allow Windows
authentication. Do the following:
1. Locate the installation directory of the reporting server instance.
2. Open the ‘rsreportserver.config’ with a text editor such as Notepad.
3. Find the following XML parameters
<Authentication>
<AuthenticationTypes>
<RSWindowsNTLM/>
</AuthenticationTypes>
4. Change the value
‘RSWindowsNTLM’ to ‘RSWindowsNegotiate
Hope This Helps
Thanks
Bhanu