Instrument Control (GPIB, Serial, VISA, IVI)

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Exclamation Point for COM port in NI MAX (Hex 0xBFFF0000) unknown system error

when tried to run VI application it get error message as attached ,

and in NI-MAX the COM ports have Exclamation Points and can't be configured by NI-Visa test panels ,

i have tried to reinstall the Visa driver and disable restart then Enable the COM ports but Still the Same Issue ,

VISA version 18 and 20.

HossamFathi_0-1669733674756.png

HossamFathi_1-1669733702780.png

 

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