If you are using the Symantec Endpoint protection version 12.1, then you will be pleased to learn that there is a new update for the 32-bit and 64-bit versions. The file names for these are 20150803-032-v5i32.exe and 20150803-032-v5i64.exe with an install size of 451.62 MB and 454.5 MB respectively.
You can only download and install the v5i32 or v5i64 executable file if you have one of the supported products, which are as follows: Norton AntiVirus, Internet Security (later than 2012), Norton AntiVirus, Internet Security 2008/2009/2010/2011/2012, Norton 360 (later than 6.0), or version 2.0/3.0/4.0/5.0/6.0, as well as Norton Security, and the one with Backup, Symantec Endpoint Protection 12.1. 2.1.2 and later, and also Protection Engine 7.x for Windows for the 32-bit version.
The very same versions, but for 64-bit are also supported in this latest Symantec Endpoint Protection. Just remember to be careful and use the Intelligent Updater files that are for your product version and platform.
If you have yet to try out Symantec Endpoint Protection 12.1, then you can do so for free for a limited period of time. This software offers superb security, with amazing performance, and smart management to either physical or virtual machines.