VeriStand 2021 Known Issues


This document contains the VeriStand known issues that were discovered before and since the release of VeriStand 2021. Known issues are performance issues or technical bugs that NI has acknowledged exist within this version of the product.


Not every issue known to NI appears on this list; it is intended to show the most severe and common issues that you may encounter and provide workarounds when possible. Other technical issues that you may encounter could occur through normal product use or system compatibility issues. You may find more information on these issues in NI’s Product Documentation, Knowledgebase, or Community.

Known Issues

At this time, there are no known issues to publish.

Final Time Issue Listed

Issues found in this section will not be listed in future known issues documents for this product.

Bug Number

Legacy ID



115349 602639

Triggers to start DAQ counter output tasks are not usable

DAQ counter output channels start without waiting for a start trigger, preventing the counters from being synchronized with the rest of the system.


Make a backup copy of the DAQ plugin XML file at %ProgramData%\National Instruments\NI VeriStand 2015\System Explorer\DAQ Plugins. In the copied file, change "true" to "True" in each of the property setting sections where lowercase “true appears. Afterwards, move the backup XML out of the DAQ Plugins directory to prevent an error from occurring. 

Reported Version:

VeriStand 2015 SP1

Resolved Version:



Jul 26, 2021

116062 638101

Alarm groups are difficult to assign with more than 13 alarms in the system definition file

When there are more than 13 alarms in a system definition, the System Explorer Alarms configuration page may not show all alarms. For alarms that do not appear, users will be unable to assign alarm groups through System Explorer.


Open the VeriStand Editor and select View » System Definition. In the System Definition pane under Alarms, right-click an alarm you want to assign to a group and select Properties. In the dialog box, enter an Alarm Group number and click OK.

Reported Version:

VeriStand 2016

Resolved Version:



Jul 26, 2021

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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).