Why do I need Windows administrator rights to calibrate my display with QAWeb Agent?

Article number: [5172] - Legacy code: [KB7824]

This article applies to the following products:

Problem

When starting a calibration in QAWeb Agent, I am prompted to restart the application as a local administrator.

When starting the calibration from the 'Status' window:

Or when starting the calibration from the 'Configuration' window:

Root cause

Because of the SteadyColor calibration and the additional features that come along with it in the Intuitive Workflow Tools Barco provides with the MXRT display controllers, we install an ICC profile after the calibration. The Windows operating system requires local administrator rights to install this ICC profile.

To find out what an ICC profile is, check out the following Wikipedia page: https://en.wikipedia.org/wiki/ICC_profile

Affected displays

This only happens on displays which support the 'SteadyColor' calibration, currently the following models:

  • MDMC-12133 (Coronis Uniti)
  • MDNC-6121 (Nio 5MP Color)

Solution

If you open the application normally (double-click the application shortcut or double-click the QAWeb Agent systray icon), then it is not started with local administrator rights, even if you are a local administrator on the workstation. This is how recent versions of Windows protect the user from doing accidental harm to the system.

You need to right-click the application shortcut and choose 'Run as administrator' to actually start the application with elevated rights.

Exception

Because of how Windows is designed, the QAWeb background service which runs as a 'Local system account' does not require these elevated rights to do the calibration (or better: has by default these elevated rights). So any scheduled calibration or calibration which is started remotely from QAWeb Server will succeed without any manual intervention.

Properties

Last updated Jun 14 2022

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