Error 1012 When Trying to Create a Channel Writer on LabVIEW™

Updated Feb 25, 2026

Reported In

Software

  • LabVIEW

Issue Details

When I try to create a Channel Writer in LabVIEW, the channel endpoint is not created, and I get the following error message:

 

LabVIEW could not create the requested channel endpoint.

Template: Stream
Error code: 1012
Details:
LabVIEW: (Hex 0x3F4) Cannot load block diagram.

 

Solution

This error occurs because the folder LabVIEW Data is not located in the C:\Users\<Your Name>\Documents\LabVIEW Data and is located in a network documents folder, or this could also be because a different user is login using LabVIEW. The folder that LabVIEW uses for Channel Wires is located in the LabVIEW Data directory, which by default resides in \Documents\LabVIEW Data. This folder must be writable by the currently logged-in user to ensure proper functionality.

 

To resolve the issue, move the folder to a location on the C: drive. Additionally, verify that the folder’s owner matches the currently logged-in user account.