Unified Architecture

Title: Local Discovery Server (LDS) Description:

The Local Discovery Server (LDS) provides the necessary infrastructure to publicly expose the OPC UA Servers available on a given computer.



This download includes:


  • Windows based executable written in portable ANSI C
  • Revision history


Documentation can be found here.



License: OPC Redistributable Agreement of Use


OPC Foundation membership fees are used by the OPC Foundation for the continuous improvement of this application, which includes bug-fixes to the application and the Stack it uses, and adding new features as required by the continuous advancement of the OPC Specifications.


Sample code/ Reference Implementations are provided to OPC Foundation Members as-is for the primary purpose of demonstration and educational purposes. OPC Foundation Members may use the OPC Foundation deliverables for their Product development. (Members are not permitted to distribute OPC Foundation Source code (see OPC Foundation license agreement)


Technical support is provided in the form of sample code and synopsis documentation. The OPC Foundation will soon have a forum where the OPC Foundation members and community provide “support” for the advancement and adoption of OPC technology.


Found a bug? Please report any bugs to our Mantis system. Click the "Tracking" tab for a list of current work items. We welcome your bug-fixes and kindly ask you to submit them via Mantis.


Have a Suggestion / Request for enhancement / New Features? Please Join an OPC Foundation Member Working Group (details may be found here). You may also submit requests to the OPC Foundation email address of. All suggestions become the property of the OPC Foundation.



  • Linux version
  • Bug-fixes and enhancements as needed.

Activities including bug-fixes and feature requests as reported in our Mantis bug-tracking system as described here.



Access: Registered User
VersionStatusDescriptionDate Posted
1.03.401ReleaseOPC UA Local Discovery Server (EXE/ZIP)2019-06-18 Icon
1.03.401ReleaseOPC UA Local Discovery Server MergeModule (MSM/ZIP)2019-06-18 Icon
VersionStatusDescriptionDate Posted
1.03.400ReleaseOPC UA Local Discovery Server (MSI/ZIP)2018-08-09 Icon
1.03.400ReleaseOPC UA Local Discovery Server MergeModule (MSM/ZIP)2018-08-09 Icon