Symantec Endpoint Protection Manager: Remote Push of Communication Update Package for Windows client fails. The push behaves as if the package is for a Macintosh client, displaying Macintosh-related warnings and pop-ups, and fails whether a Macintosh or Windows client is selected.
"Warning: if you install SEP, Mac computers automatically restart..."
"Could not browse the network. The Bonjour service is missing"
Symantec is aware of the issue and this article will be updated as new information becomes available.
Workaround: Select "New Package Deployment" instead of the Communication Update Package choice and click "Next." Select a Windows package from the drop-down in next dialog and then click "Back." Choose the radio button to Create a Communication Update Package for a Windows client and client "Next" and then the procedure will behave as expected.
Symantec Endpoint Protection Manager, Small Business Edition, version 12.1 RU5