Can you try a different browser? Older versions of the iDRAC security may not meet the requirements of newer browsers. 
We have a PowerEdge 6850 with Red Hat Ent. Linux 5 installed.  I am having trouble accessing the remote management.  The machine has two network ports and it also has a PCI card installed with a VGA and Ethernet port.. not exactly sure what that is yet.  I inherited a bit of a mess here... Server Administrator seems to already be installed in /opt/dell/srvadmin.  if i run /opt/dell/srvadmin/setup.sh i receive the following: # ./setup.sh ##############################################  Server Administrator Custom Install Utility##############################################  Server Administrator version 5.3.0 is currently installed.  Installed components are:   - srvadmin-deng-5.3.0-438   - srvadmin-jre-5.3.0-438   - srvadmin-omhip-5.3.0-438   - srvadmin-racadm4-5.3.0-438   - srvadmin-iws-5.3.0-438   - srvadmin-storage-5.3.0-438   - srvadmin-syscheck-5.3.0-438   - srvadmin-hapi-5.3.0-438   - srvadmin-omilcore-5.3.0-438   - srvadmin-ipmi-5.3.0-438.DUP   - srvadmin-omauth-5.3.0-438.rhel5   - srvadmin-rac4-components-5.3.0-438   - srvadmin-racdrsc4-5.3.0-438   - srvadmin-isvc-5.3.0-438   - srvadmin-cm-5.3.0-438   - srvadmin-omacore-5.3.0-438   - srvadmin-racsvc-5.3.0-438  Do you want to upgrade Server Administrator to 7.3.0?  Press ('y' for yes | 'Enter' to exit): yError: Check whether the Server Administrator media is corrupted.       If you are using the Web pack to install Server Administrator,       ensure that you use the Web pack corresponding to the       architecture and operating system on your system.#  yet i am unable to reach any sort of remote access web interface or server management web interface.  Please assist me in getting access to the system management.  The priority is to access the management of two MD1000 arrays we have connected to the 6850.  Thanks
Management of PowerEdge 6850 with RHE Linux