Software removal options for existing software
You can indicate in the installation package whether to remove existing security software during the installation of the Symantec Agent. For best results and optimal performance, Symantec recommends that you uninstall a competitor's security software first before you install the Symantec Agent.
Options and Descriptions
Do not uninstall existing security software
The default setting for Windows agent installation settings. Existing security software is not removed before the installation of the Symantec Agent.
Automatically uninstall existing third-party security software
Uninstalls third-party security software on the device before installing the Symantec Agent.
Some programs may have special uninstallation routines, or may need to have a self-protection component disabled. See the documentation for the third-party software to prepare it for automatic removal.
Symantec Endpoint Protectionclient software that cannot be uninstalled
Uninstalls the existing
Symantec Endpoint Protectionclient on the device, before you replace it with a newer version.
You should use this feature only to remove installations of the client that you cannot uninstall through standard methods. These methods include Windows Control Panel. You should not enable this feature for all deployments. This feature is comparable to CleanWipe.
This feature is not currently supported for deployment using GPO. See: