Archived:Error 1722 or 1721 When Uninstalling LabVIEW 7.1

Updated Mar 10, 2025

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Reported In

Software

  • LabVIEW 7.1.1 Full

Issue Details

I was trying to uninstall LabVIEW 7.1, and I received error 1722 (or 1721) followed immediately by an error 1603 dialog box that asks if I want to continue the operation. How can I uninstall LabVIEW 7.1?

Solution

In rare circumstances, this problem occurs when you try to remove certain shared components during uninstallation.

Complete the following steps to resolve this problem:

  1. Make note of which part of LabVIEW was uninstalling when the error occurred. It usually occurs during the LabVIEW Core-Full part, the LabVIEW 7.1 Runtime Engine part, or during both.
  2. When the error 1603 dialog box prompts you to continue the operation, click the Yes button.
  3. If prompted to restart your computer after the uninstallation completes, click the No button.
  4. For each part that generated an error during the uninstallation, run the corresponding MSI files manually from the CD:
    • LabVIEW Core-Full -- [CD Drive]\components\lvcorefull\lvcorefull.msi
    • LabVIEW 7.1 Runtime Engine -- [CD Drive]\components\lvruntimeeng\lvruntimeeng.msi
  5. Click the Repair button.
  6. Run the MSI file for the same part again.
  7. Click the Remove button.

LabVIEW 7.1 should be completely uninstalled.

 

Additionally, in case the above troubleshooting failed please try the following steps.

  1. Run the Command Prompt as an Administrator
    • You can search for "cmd" in the Start menu, right-click on Command Prompt, and select Run as administrator.
  1. Run the SFC Command: In the Command Prompt window, type sfc /scannow and press Enter.
  2. Wait for the Scan to Complete: The system will start scanning and repairing any corrupted files. This process might take some time.
  3. Review the Results: Once the scan is complete, you will see a message indicating whether any issues were found and if they were fixed.



Using Microsoft Fix-It Utility:
If you are unable to uninstall using National Instruments Package Manager or through instructions above, use Microsoft Fix-It Utility.
Download Microsoft Fix-It Utility and follow instructions in the program to select and uninstall Runtime Engine 7.1.