Move the forum in Security (Endpoint)
Sylink replacer is the tool to replace the file on multiple systems
The Sylinkreplacer tool for connecting SEP clients to a SEPM
https://www-secure.symantec.com/connect/downloads/sylinkreplacer-tool-connecting-sep-clients-sepm
If you are using SEPM 12.1 then go with Simpson Comment in below thread
https://www-secure.symantec.com/connect/forums/using-sylink-replacer-tool