Error -356629 When Creating More Than 25 Parallel Clients With OPC UA Toolkit

Updated Jun 9, 2020

Reported In


  • LabVIEW OPC UA Toolkit

Issue Details

The customer is making the stress test of the number of clients connected to one NI OPC UA server. They found that the error -356629 was reported when they create more than 25 clients.

Error -356629 occurred at an unidentified location

Possible reason(s):

OPC UA Toolkit:  (Hex 0xFFFA8EEB) An operating system resource is not available.

How to avoid this error?


To correct this issue, you can upgrade to LabVIEW and the OPC UA Toolkit version 2019 or later.