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Updated on April 29, 2026
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LANSA Open V5.3 adds compatibility with Microsoft .NET 10, enabling your .NET applications to access IBM i (AS/400, iSeries, System i) resources on the latest .NET platform.

🔽 Download LANSA Open V5.3 from the Support Portal Now

Modern .NET 10 Runtime, Same Repository-Driven Integration

This release enables you to benefit from the latest .NET runtime improvements in performance, security, cloud readiness, and modern AI integration frameworks while preserving the secure, repository-driven integration model and familiar Visual Studio workflow you rely on today.

.NET 10 compatibility

LANSA Open V5.3 supports targeting .NET 10.0, Microsoft’s Long-Term Support (LTS) release. You can build and run your LANSA Open solutions on the .NET 10 runtime while maintaining your existing integration architecture and application design.

.NET10 delivers:

  • Runtime performance improvements and JIT optimizations
  • Memory management enhancements
  • Ongoing advancements in ASP.NET Core 10
  • Continued improvements to SDK tooling and developer workflows
  • Support for modern deployment scenarios including containerized environments

This ensures your LANSA Open integration layer remains aligned with Microsoft’s forward platform roadmap.

AI-Ready .NET 10 Platform

.NET 10 expands AI development capabilities through supported Microsoft libraries and frameworks, including:

  • Microsoft.Extensions.AI for structured AI service integration
  • The Microsoft Agent Framework for building agent-style AI applications
  • Updated SDK patterns for integrating with Azure AI services
  • Standardized abstractions for interacting with large language model (LLM) providers

These capabilities allow developers to integrate AI services into .NET applications using supported, documented frameworks.

With LANSA Open V5.3, your IBM i data and repository-driven business rules can participate in these architectures. Developers can:

  • Expose LANSA server functions as APIs consumed by AI-enabled workflows
  • Build AI-assisted applications backed by trusted LANSA validation logic
  • Combine IBM i data with AI-driven insights while preserving governance and repository integrity

Latest Visual Studio Support

LANSA Open V5.3 is compatible with the latest supported version of Visual Studio, enabling you to:

  • Target .NET 10.0 projects
  • Use improved IntelliSense and debugging tools
  • Take advantage of updated SDK-style project features
  • Work within modern DevOps and CI/CD pipelines

All while continuing to use the same LANSA Open repository workflows and generated classes.

Developer Experience Continuity

Upgrading to LANSA Open V5.3:

  • Does not require redesign of your integration architecture
  • Does not change LANSA Repository interaction patterns
  • Does not alter server function contracts or validation behaviour

After installing V5.3:

  1. Update your project references to the new LANSA Open assemblies
  2. Retarget your solution to .NET 10.0
  3. Rebuild

Your IBM i access logic and repository-driven rules continue to operate exactly as before.

Why Upgrade to LANSA Open V5.3 (.NET 10)

Future-aligned platform

Stay current with Microsoft’s evolving .NET ecosystem and long-term roadmap.

AI-ready architecture

Leverage .NET 10 AI libraries and cloud AI services while keeping LANSA business rules central and authoritative.

Low-risk upgrade path

No architectural redesign required. Minor project reference updates only.

Performance & security improvements

Benefit from ongoing runtime optimisations and security enhancements in .NET 10.

Operational consistency

Maintain LANSA Open’s encrypted, compressed client-server communication and native record-level Db2 access — faster than ODBC and without requiring deep IBM i expertise from .NET developers.

ℹ️ ABOUT LANSA OPEN FOR .NET

LANSA Open for .NET is a Visual Studio extension and toolset that lets Windows/.NET developers access LANSA Repository objects (tables, server functions, validation rules, multilingual texts) directly from C# or VB.NET projects.

You design a LANSA data model and LANSA Open generates the .NET classes and methods behind the scenes, making coding faster and less error-prone with IntelliSense.

How to install LANSA Open V5.3 for .NET 10?

Log in to the Support Portal to download LANSA Open V5.3 now or contact your Account Manager to get access. For technical steps and examples, you may refer to the LANSA Open for .NET documentation and quick start materials included in the build package.

Simplify complex integrations

ABOUT THE AUTHOR
Sofia Kilmartin

LANSA’s Product Manager, dedicated to accelerating IBM i modernization and cross-platform innovation with AI-powered developer solutions

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