Font 'Tahoma' does not support style 'Regular'

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When you run your Windows Application, you might get an error:

Font 'Tahoma' does not support style 'Regular'.

The reason is your Windows system lost Tahoma font, or other software that you installed changed this font using other versions

The resolution is just find back Tahoma font, at least for Windows XP, you can download from Microsoft.com (Tahoma)