This error indicates that the HOSTID linked to your Uptime Infrastructure Monitor license key does not match the HOSTID of your current monitoring station.

There are a few reasons why this error may occur:

  1. You have installed the Monitoring Station on a new system and are still using the same license key.
  2. You made changes to your system hardware.
  3. You have re-installed your Operating System.
  4. If your system is a VMware instance, the UUID or MAC address for the instance may have changed.

Regardless of the root cause, you will need to generate a new license key that matches the new HOSTID (How to Find Your HOSTID).  You can do this by logging into the Uptime licensing portal, expand the Deployment Name and click on Re-host License Key.