I have only a single COM port in my computer.
MSCOMM and direct API call samples work fine.

>Not sure. The VFP Help file is not very helpful:
>
>Record your recent actions while using Visual FoxPro and then call Microsoft Support.
>
>Conflicting settings in the Device Manager for this port? Do you have another port you can try?
>
>>I tried
>>
>>

fp = fopen('COM1',12)

>>
>>in VFP 7,8 & 9 beta and got an invalid seek offset error.
>>
>>Why ?