What's new in Connectivity Software 2026.1

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This article describes the improvements and other changes made in Connectivity Software 2026.1. Internal version number: 5.84.

Key changes:


Targeting

  • Windows 11 version 22H2 (x64) removed from the list of supported operating systems.
  • Windows 10 version 1809 (x64) removed from the list of supported operating systems.

Technology

  • OPC UA Client-Server parts are now based on OPC Foundation UA-.NETStandard 1.5.378.65.

Packaging

  • The OpcCmd, UADemoPublisher, and SparkplugCmd utilities are now also published as Docker images.

Delivery

  • The Docker images for OpcCmd, UADemoPublisher, and SparkplugCmd are publicly available on Docker Hub[1].

Component Improvements

OPC UA

  • Updated classes in OpcLabs.EasyOpc.UA.AddressSpace.Standard namespace (such as UAObjectsIds) to reflect enhancements up to OPC UA 1.05.06.
  • Added newly introduced certificate types to the UACertificateTypeIds class.

OPC UA Client-Server

  • Added UAPermissions and UARolePermissions types, and their intrinsic conversions from/to OPC UA PermissionType and RolePermissionType. This makes it easier to read and write RolePermissions and UserRolePermissions attributes of nodes.

OPC UA Client

  • It is now possible to specify certificate acceptance policy differently for each endpoint, by setting the UAEndpointDescriptor.CertificateAcceptancePolicy to a non-null UACertificateAcceptancePolicy object.
  • Added static UANodeId.KEPServerEX method for easy creation of OPC UA node IDs when using Kepware KEPServerEX.

Component Refactorings

OPC UA Client

  • Renamed UserIdentity class to UserIdentityInfo. Correspondingly, renamed UserIdentity property in objects like UAEndpointDescriptor to UserIdentityInfo[2].

Tools and Online Services

Connectivity Explorer

  • Added "Certificate Acceptance Policy" command on OPC UA endpoint node, allowing the user to specify the policy used with the chosen endpoint.

OpcCmd Utility

OPC UA Server

  • Under uaServer, use mesh addFrom instead of addMesh subcommand.

Examples

Platform: .NET

  • Added over 20 client code examples in C# with KEPServerEX, for OPC Classic (Data Access) and OPC UA.

Documentation and Help

  • Added Getting Started procedures for creating OPC UA and OPC DA console applications for .NET Framework (in Visual Studio)
  • Improved visuals and navigation in User's Guide, added clarifications, esp. in Getting Started and Examples sections.
  • Improved Knowledge Base visuals and navigation, updated and streamlined Categories and Table of Contents.


  1. ↑ Released January 2026.
  2. ↑ This change has been made to make place for the new IUserIdentity interface and its implementing classes, with different semantics, used in server development.
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