While dealing with managed antivirus solutions, you might want to remove outdated antivirus clients from your workstations. In the case of Symantec’s AntiVirus CE, you will be asked for an uninstall password. If you don’t know the password for any reason, do the following:
Open up regedit (Start -> Run -> regedit) and go to

HKEY_LOCAL_MACHINE\SOFTWARE\Intel\LANDesk\VirusProtect6\CurrentVersion\AdministratorOnly\Security

and set the value of UseVPUninstallPassword to “0”

Now the uninstall- routine runs without asking for a password.