Other Solution (To Remove the Password)
Double click on Symantec Client shield from Taskbar.
Go to HELP AND SUPPORT -> TROUBLESHOOT
From TROUBLESHOOT Tab Export the Policy from Policy Profile
Save it with name of Policy.xml in your Local System
Edit the Policy.xml in Notepad
Find the below Content and make the appropriate changes mention below.
AdminPassword ExitNeedPassword, UINeedPassword, ImportExportNeedPassword, UninstallNeedPassword
Set the Value as "0"
(I.E AdminPassword ExitNeedPassword="0" UINeedPassword="0" ImportExportNeedPassword="0" UninstallNeedPassword="0")
Than save the file in XML format and import the same.
Import Step
Go to HELP AND SUPPORT -> TROUBLESHOOT
From TROUBLESHOOT Tab Import the Policy from Policy Profile
Add the same file.
Then Enter the Smc -stop Command.
Service will be stop without password.
For the USB you can copy the same file "Policy.xml" from running full access system and import here.
Hope this information help to you