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There are two ways to uninstall the OfficeScan client from endpoints:
If the client also has a Cisco Trust Agent (CTA) installation, uninstalling the OfficeScan client program may or may not remove the agent. This depends on the settings you configured when you deployed the agent. For more information, see Deploying the Cisco Trust Agent.
If the Cisco Trust Agent exists after you uninstall the OfficeScan client, manually remove it from the Add/Remove Programs screen.
If the client cannot be uninstalled using the above methods, manually uninstall the client. For details, see Manually Uninstalling the Client.