The Sylink.xml file includes communication settings between the client and a Symantec Endpoint Protection Manager server. If the clients have lost the communication with a management server, you must replace the old Sylink.xml file with a new Sylink.xml file. The SylinkDrop tool automatically replaces the Sylink.xml file on the client computer with a new Sylink.xml file.
You can also replace the Sylink.xml file by redeploying a client installation package. Use this method for a large number of computers, for computers that you cannot physically access easily or computers that require administrative access.