Error 0xFFFEFA29 When Deploying a Web Service in LabVIEW 64-Bit

Updated Feb 28, 2021

Reported In


  • LabVIEW

Issue Details

When I build a new Web Service in LabVIEW 64-Bit, the build completes without errors. However, when I deploy the service I get Error LabVIEW: (Hex 0xFFFEFA29) LabVIEW Web Services: Target OS differs from INI file configuration. occured.


The Web Application Server defaults to 32-bit deployment. To make your web service 64-bit compatible, navigate to Tools»Options, select the Web Server category and click Configure Web Application Server. In the Web Server Configuration utility, listed in the Application Web Server properties, select the radio button for 64-bit.