Follow to uninstall without password
1) Open Regedit
2) Browse to HKEY_LOCAL_MACHINE\SOFTWARE\INTEL\LANDesk\ VirusProtect6\CurrentVersion\Administrator Only\Security\
3) Change the value for this key from 1 to 0
useVPuninstallpassword
4) Close the registry and retry the uninstall
or the second option is to kill the msiexec.exe
when it prompts for password
open the taskmanager
kill the msiexec.exe running under user name (currently logged in user)
the uninstall will complete.