NI OPC Servers Stop Running After 2 Hours

Updated May 19, 2025

Reported In

Software

  • OPC Servers

Operating System

  • Windows

Issue Details

When I run NI OPC Servers for more than 2 hours, the device automatically disconnects, and I receive the following error message:

Source: Licensing
Event: The demonstration time period has expired.

This error is shown below:

Solution

The NI OPC Server is not activated, and NI OPC Servers are installed by default with a temporary license for a two-hour evaluation period. You will need to purchase the OPC Servers License or, if you already have one, please activate it.

Additional Information