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Too many posts made to a semaphore error: vb application

Guest Stephen Passano

By Guest Stephen Passano
in Microsoft Products Support & Discussions

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Guest Stephen Passano

Guest Stephen Passano

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I am writing a vb application on a new Windows 11 Surface. When the application opens the serial port, I receive a "Too many posts made to a semaphore" error. I have followed all steps I have found on the subjects (disabled anti-virus, disabled all startup apps, running as administrator). Any help would be greatly appreciated. Private Sub Button_Click(sender As Object, e As RoutedEventArgs) Dim myport As SerialPort myport&nbs

 

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