@latvian, if it prints from some apps but not from others, that suggests the problem is not with the virtual port itself.
However, if the printer has a USB port then it should be possible to connect it using the proper software for that printer, why bother with this virtual parallel port.
If the printer does not have a USB port then you must be using some sort of hardware adapter, in which case please tell us what it is.
@VB
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