NI-DAQmx (18.0 to 19.1) Bug Fixes


The following items are issues fixed in NI-DAQmx, starting with NI-DAQmx 18.0. This is not an exhaustive list of issues fixed. If you have a CAR ID, you can search this list to validate that the issue has been fixed.

Issues Fixed in NI-DAQmx 19.5

CAR or Bug ID Description Fixed NI-DAQmx Version
734812 NI-DAQmx does not return an error when specifying an unsupported external sample clock for NI USB 6001/2/3 AO tasks NI-DAQmx 19.5
728999 Incorrect force measurement sensitivity units in IEPE - Continuous example NI-DAQmx 19.5
650465 Creating a Current Channel using a TB-4300C with Measurement Studio returns Error -200077 indicating incorrect Shunt Resistor value NI-DAQmx 19.5
202389 ELVIS II+ Oscilloscope from Instrument Launcher does not work with new 19.0 version of NI-ELVISmx NI-DAQmx 19.5


Issues Fixed in Previous Versions of NI-DAQmx

CAR ID Description Fixed NI-DAQmx Version
703378 S Series DAQ Devices hang when acquiring in DMA transfer mode on Linux 19.1
636702 ANSI C Examples fail to compile due to missing file locations on Linux 19.1
736987 Setting invalid strain gage resistance value with FieldDAQ causes a crash 19.1
734612 Error -209836 using FirstSampClk properties on a TSN-sync'ed FieldDAQ target 19.1
734581 Error: Undefined symbol when compiling LabWindows/CVI application using function DAQmxCreateCIDutyCycleChan 19.1
719193 NI 9260 AO slave task throws Error -201347 "Sync Pulse not detected" when synchronized with AI task 19.0
731238 Data corruption can occur when synchronizing multiple NI 9202s with different filter cutoffs 19.0
705662 Network cDAQ hangs while running self-test during initialization 18.6
707701 NI-DAQmx crash when calling DAQmxCreateAIVoltageChan in Visual Studio on the NI 9205 18.5
702845 In LabVIEW NXG, a DAQmx task created from an input terminal initially fails with Error -200428 18.5
694140 Gain adjustment value is not set after shunt calibration in DAQExpress 18.5
699289 Including NIDAQmx.h may change the layout of user-defined structs that contain CVITime, CVIAbsoluteTime, or CVITimeInterval 18.5
539710 If the trigger source frequency is too high, NI-DAQmx errors with -200361 on a cDAQ device 18.5
646229 Process remains after exiting C++ application without stopping or aborting on Linux RT cDAQ 18.1
675713 RTSI line resource reserved error occurs while synchronizing tasks on a TSN cDAQ 18.1
697690 Ethernet cDAQ appears to crash on DAQmx watchdog expiration when DSA task is running 18.1
689440 Time trigger uses default time in multi-device tasks when explicitly committed 18.1
688114 When running DAQmx frequency tasks in NI MAX on a NI 9401, the task hangs indefinitely when no signal is connected 18.1
680182 Channel Calibration Wizard forgets Acquisition Attributes when importing NI MAX database 18.1
680179 PXIe-4300 with TB-4300C ignores custom scale after applying channel calibration 18.1
673712 DAQmx Start:Terminal property does not return segment number on cDAQ-9179 when user specifies timing engine 18.1
659756 Explicit commit on a finite task causes continuous acquisition with USB-6001 18.1
677161 Sync lock loss error occurs on TSN enabled devices 18.0
682682 Network CDAQ fails self-test, reset, and reserve with Error -52003 18.0


Glossary of Terms


  • Bug ID - When an issue is reported to NI, you may be given this ID or find it on  You may also find IDs posted by NI on the discussion forums or in KnowledgeBase articles.
  • Legacy ID – An older issue ID that refers to the same issue.  You may instead find this issue ID in older known issues documents.
  • Description - A few sentences which describe the problem. The brief description given does not necessarily describe the problem in full detail.
  • Workaround - Possible ways to work around the problem.
  • Reported Version - The earliest version in which the issue was reported.
  • Resolved Version - Version in which the issue was resolved or was no longer applicable. "N/A" indicates that the issue has not been resolved.
  • Date Added - The date the issue was added to the document (not the reported date).