Plustek OpticLab H850 User Manual page 21

If you prefer not to see this reminder message again, you may:
Check the box of [Do not show this message again] within this message
window, and then click [OK] button.
Click on the QuickScan icon
Uncheck [Enable Warning] from the menu that pops up. Click the [No]
button in the message box that appears.
If you would like to be prompted with this message again, you
may click on the QuickScan icon
Warning] from the menu that pops up. Click the [Yes] button in
Attention
the message box that appears.
located on the Windows system tray.
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and check [Enable