After installing Backup Exec 15 14.2 FP3 to a machine where Symantec Endpoint Protection (SEP) 12.1 RU6 MP4 was previously installed, the Auto-Exclusions are not being created to exclude SEP from scanning files during a backup.
How Backup Exec works with SEP’s AutoExcl.exe:
The service process of "Backup Exec Device & Media Service" is pvlsvr.exe (installed under "C:\Program Files\Symantec\Backup Exec\" by default). When this service is restarted, it launches the SEP AutoExcl.exe to configure exclusion list on the SEP Client.
This issue is fixed in Symantec Endpoint Protection Client 184.108.40.206. For information on how to obtain the latest build of Symantec Endpoint Protection, read
TECH 103088: Download the latest version of Symantec Endpoint Protection