The issue has been identified and a fix is being worked on.
Posted Oct 28, 2020 - 16:53 UTC
Investigating
We are aware that users being supported via Instant Support, in cases where RealVNC customers changed their Instant Support branding recently (since 25th September), are experiencing difficulties downloading and running the branded Instant Support executable and are receiving SmartScreen warnings on Windows. NOTE: the recently branded Instant Support executable can still be run by choosing to "Run anyway" if necessary
Posted Oct 28, 2020 - 16:53 UTC
This incident affected: RealVNC Connect (On-Demand Assist - Branding Service).