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NI-DMM 2025 Q4 Bug Fixes

Created Feb 24, 2026

Overview

The following items are notable issues fixed between the release of NI-DMM 2025 Q3 and NI-DMM 2025 Q4, including additional patches and service packs. If you have an issue ID, you can search this list to validate that the issue has been fixed. This is not an exhaustive list of issues fixed in the current version of NI-DMM 2025 Q4.

Bug Number

Legacy ID

Description

Details
3723581

Initialize External Calibration.vi or niDMM_InitExtCal() may return an error in certain configurations

Calling Initialize External Calibration.vi or the niDMM_InitExtCal() function may return an error in certain configurations when a LabVIEW Runtime Engine 2024 or newer is in use.
It may return error -1074130544 ("The session handle is not valid") or error -1074118650 ("An error was returned by one of the internal function calls.").

Workaround:

Only call Initialize External Calibration from within the LabVIEW 2023 Development Environment, ensure that the newest LabVIEW Runtime Engine installed on your system is LabVIEW 2023, or downgrade to a version older than NI-DMM 2023 Q1.

Reported Version:

NI-DMM 2025 Q1

Resolved Version:

NI-DMM 2025 Q4 Patch 1

Added:

Jan 27, 2026

Additional Patch Information

Installing some patches may require certain additional steps or considerations. Please refer to the following table for more information about patches for this release.

These patches currently do not have any special instructions.

Glossary of Terms

 

  • Bug ID - When an issue is reported to NI, you may be given this ID or find it on ni.com.  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  • Resolved Version - Version in which the issue was resolved or was no longer applicable.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).