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You cannot have more than one version of NI-DAQmx installed at the same time on the same machine. Installing a newer version of DAQmx will automatically update the driver. To downgrade DAQmx, you will have to uninstall the current version first and then install the required version.Note: You can only have one version of the DAQmx Runtime driver installed. However, because the DAQmx Runtime driver is backward compatible, it can run code compiled with an older version of DAQmx.Try the suggestions below as an alternative to having multiple versions of NI-DAQmx:
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