Instrument Control (GPIB, Serial, VISA, IVI)

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NI-MAX Shows GPIB-USB-HS adaptor that does not exist

Good morning, 

I am using a NI GPIB-USB-HS to connect an instrument to my PC. However, when I open NI-MAX, I see two GPIB-USB-HS connected, even though I have only one. If I unplug the (only) one that is connected, one of the two devices disappear from Ni-MAX, but the other remains. 
I tried to remove it from the Device page of windows, but upon restarting the PC it appears again.

Someone can help me with this?

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Not sure if you have already resolved this issue, but you can reset the configuration data in NI MAX. Just go to Tools >> Reset configuration data, and this should remove the duplicate device.

Hope this helps!

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