Use the Settings > Services > Sentry screen to change the default setting for whether new devices are allowed or not allowed to access the ActiveSync server or backend resource when UEM is inaccessible.
Figure 1. New device access when UEM is unreachable
Use the New device access when EMM server is unreachable setting to allow or block new devices or devices not in the Standalone Sentry cache, access to the ActiveSync server or backend resource if UEM is not reachable.
By default Standalone Sentry allows new devices access to the server if the UEM is not reachable.
Changing the New device access when UEM server is unreachable setting does not restart Standalone Sentry.
To block new devices from accessing the server when UEM is unreachable, select Block from the drop down list and click Apply.