Symantec Antivirus Win64 requires elevated privileges to install for Windows 7 machine

Hello,
While installing Symantec Endpoint Protection client, on windows 7 64 bit machine, i received a warning message seeking for higher privileges for installing the SEP client and I cannot continue with the installation process.

This version of Symantec Antivirus Win64 requires elevated privileges in order to install. Please log in as an administrator, or contact your network administrator for help.
Please help.
Thanks in advance.
