The SentinelProtectionInstaller7.4.0.exe installs the Sentinel Protection drivers required to access the Softree security hardlock keys (both parallel port and USB). It also installs the Sentinel Protection Server required for Softree network keys  

If you are using password protection you do not need to run SentinelProtectionInstaller7.4.0.exe

Installation

1) Download the SentinelProtectionInstaller7.4.0.exe into a temp directory.
2) Double click on SentinelProtectionInstaller7.4.0.exe and follow the instructions. Do NOT attach any keys until the drivers are installed and the computer restarted.

The default installation directory for SentinelProtectionInstaller7.4.0.exe is
c:\Program Files\CommonFiles\SafenetSentinel

For trouble shooting download the end user guide from Safenet
www.safenet-inc.com/support/files/SafeNet_Sentinel_EndUser_Guide.pdf