Before 10.6.6, ENSL used file names with the prefix iSec*. With ENSL version 10.6.6, the location and names of files have changed. For information about the specific location and name changes, see KB92028 - Binary name and installation path changes with Endpoint Security for Linux 10.6.6.

ACC Linux uses absolute paths for trust validation of binaries. The current version of ACC whitelists the pre-10.6.6 paths. With this change, the trust mechanism in ACC fails for 10.6.6. As a result, specific ACC configurations can result in a deadlock.

Due to this incompatibility, ENSL 10.6.6 and later don't install or upgrade if ACC 6.4.0 or earlier is detected on the system.