Serial comm. broke after upgrading from version 4 (Win95) to 6.i (Win2000)

[ThomasB]

The cable is only a 3-Pin connection (RxD,TxD,GND). DTR,DSR and RTS,CTS are wired). May Win2000 have problems with connections and Win95 not?
Or occurs the error because of the change from a 16- to a 32bit system? The Port seems to be O.K., already tested with another device.

[Chris_Rake]

Did you upgrade LV4 to LV6i as well, or is this just an OS upgrade? If it is the later, and your application is a DOS app or does not use the Win32 API - then it will not work on Win2000. The NT architecture does not allow user applications to access the serial port directly.