We installed SSRS 2008 R2 standard edition on a test server (windows server 2008 R2). We added clients and assigned corresponding roles. Clients tried to open report manager url. It prompted a window for username/pw, we input correct account info, it loaded partial Report Manager GUI and showed error msg "Unable to connect to the remote server". In the rsreportserver.config file, <reportserverURL> http://123.234.45.345:8101/reportserver</reportserverURL>, set secureconnectionlevel with "0". Authentication type <RSWindowsNTLM/>. We also added report manager url on the "local intranet" list, With no luck...