unable to get the report server locally via https

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IIS7

Windows

SQL-Server

IIS

, +

i found that when I attempt to connect to Reports or ReportServer from inside the server in http mode it works normally.
when I login with the same userid and run it in https on the server, using IE,
I trying https:\\servername\reportServername and
it is prompting me for a login 3 times before failing and i get a blank page.
(even with my admin user)
However, when I try to access the report server remotely it succeeds.

my configuraton is:
windows server 2008 R2
IIS 7.5
SQL Server 2008 R2 Reporting Services

the application user added to following groups
"SQLServerDTSUser$SERVERNAME"
"SQLServerReportServerUser$SERVERNAME$MSRS10_50.MSSQLSERVER"


Any input or guidance would be extremely appreciated.

Thank you in advance.