>>I have a report that generate barcode using font interleaved 2 of 5. After the user did upgrade to windows xp the barcode does not print correct. The printer used is HP deskjet 840C. Is it necessary to do the upgrade of the font?
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>Did you install font that prints barcode on WinXP?

I just copied the font interleaved 2 of 5 to the c:\windows\fonts (win XP version). The same font that was used with windows 98.