We have released a new version of the Policy Key to allow compatibility with the latest OS X being released on Monday, September 25th.
Endpoints should automatically update to the latest Policy Key version with no end user interaction required the next time they connect to a SafeConnect managed network. However, if a device updates to OS X 10.13 High Sierra before the Policy Key automatically updates, they may be prompted to re-install the policy key. Upon doing so, the user would become compliant again. This potential re-install is necessary due to a change in OS X 10.13 that makes the prior version of the policy non-functional.