Issue
This issue can occur in a system that includes Advanced Security enabled ION meters.
In Vista, when I open a diagram that includes real time objects linked to Advanced Security enabled meters, I am prompted for passwords. If I inadvertently enter an incorrect password, I will see an error dialog indicated that I have insufficient privilege to access the meter. If I try again and this time enter the correct credentials I still cannot access the meter.

Product Line
Power Monitoring Expert 8.2

Environment
A PME 8.2 system that includes Advanced Security enabled meters.

Cause
When a user enters credentials for Advanced Security enabled meters, they get saved to that user's workspace file in encrypted form. For example, if you log into Vista as supervisor, the workspace file will be called supervisor.wsu and will be found in  \config\cfg\ud.

Some workflows will result in incorrect credentials being written to that file which results in the behaviour described above. Unfortunately, it has not been determined exactly what workflows will cause this problem.

Resolution
At present, the only known workaround is to delete the wsu file.This will mean that passwords will need to be re-entered when accessing Advanced Security enabled meters.