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# Access Denied Errors

Error: When I try to view real time values in my Vista ION Diagram on my target machine I get an access denied message when I hover over a register:

Likely cause: The meter security settings were enabled and set on the source system.

Error resolution: On the target system, open Management Console, click Devices, right-click the device and then click Security. In the Meter Security Settings dialog, enter the correct security settings for the device.

A similar error occurs if the server, sites, or devices are not enabled after the configuration is written to a system, or if the Ethernet is not connected.