Endpoint protection definitions not updating
Ensure they are configured correctly in Mac's Network System Preferences.
With these settings in place, you should be able to open the following sites in a web browser on the Mac.
In this case, you only need to configure updates on the primary site.
If you choose to use product updates as well as content updates, you should not replicate product updates between sites because these updates can be quite large, and one exists for every language that you select.
Before you begin to create automatic deployment rules, make sure that you have configured Configuration Manager software updates.
This is done by configuring automatic deployment rules.
Exclude or allow connection to them through the proxy: Ensure that the required ports are allowed through the proxy: HTTP port 80 (or LUA server port) as well as FTP ports 20 and 21 if using an FTP site.
If your proxy caches or scans content, you should exclude content from the above sites.
You can check your proxy configuration by testing download of (e.g. The downloaded zip file should contain a series of small files with grd/sig/tri suffixes.
In SEP 12.1 and later, you can add SEP-specific proxy server information for your managed Mac clients using the Symantec Endpoint Protection Manager (SEPM).