Error: Application Error: KestrelUI has encountered an unrecoverable problem and has had to exit - WKB29464

SYMPTOMS

• The following error message appears when attempting to launch the Waters ACQUITY console:
  • "Application Error: Application KestrelUI has encountered an unrecoverable problem and has had to exit."
• "MS Detector" appears instead of "QDa Detector" in the Run Samples window in Empower
• The QDa Detector is absent from the Waters ACQUITY console

ENVIRONMENT

• ACQUITY QDa Detector
• Empower 3
• Waters ACQUITY Console

CAUSE

The Windows user account does not have administrator permissions and cannot launch the KestrelUI.exe program, which controls the ACQUITY QDa Detector; or, the Windows user account does have administrator status but has but is corrupted. 

FIX or WORKAROUND

Temporary workaround:

1. Navigate to C:\Empower\Instruments\Mass Spec\MassLynx\Kestrel.
2. Highlight KestrelUI.exe > right-click > Run as administrator. This must be done every time the PC is restarted.
3. Ensure that the Windows user account has administrator status.

ADDITIONAL INFORMATION

See also the KB Article 8047, Error when using the Waters Deployment Manager: Empower or Millennium software or any related process is running.