
Modernize legacy systems: A guide
Outdated software is a security risk and innovation brake. Strategies to tame the 'monoliths' and make your IT sustainable.
We help you replace VB6 applications with modern solutions – step by step, with controlled risk and minimal disruption.
VB6 Replacement
Visual Basic 6 is no longer supported by Microsoft and runs on outdated infrastructure. Replacing it reduces security and compatibility risks and allows you to use modern tools and platforms. We migrate VB6 applications to .NET (C#, WinForms or WPF), web applications or hybrid setups – depending on your needs. We can do it incrementally (e.g. module by module) so operations continue during the transition.
Replacing Visual Basic 6 applications does not have to mean a big-bang rewrite. We analyse your existing VB6 code and business logic, then propose a migration path: often module-by-module migration to .NET (C#, WinForms or WPF) so operations continue during the transition. Where a web-based replacement makes more sense – for remote access, multi-site use or future flexibility – we build a modern web app that replicates the critical workflows and integrates with your existing data and systems. Business logic is preserved and tested; only the UI and technology stack change. That keeps risk and cost under control and gives you a clear roadmap with milestones.
We have migrated dozens of VB6 applications for manufacturing, logistics and administration. Data migration, user training and documentation are part of our standard scope. After go-live we offer maintenance and further development so your new system evolves with your business. If you are unsure whether to migrate or replace, we provide an honest assessment: we recommend the option that fits your budget, timeline and long-term goals. Get in touch for a free consultation – we review your situation and outline options and rough effort without obligation.
Discuss your projectFrequently Asked Questions
Not necessarily. We often migrate module by module to .NET so operations continue. We analyse your VB6 app and recommend the most cost-effective path – refactor, re-platform or targeted rewrite.
Depends on size and approach. Smaller apps often 3–6 months; large systems 12–24 months or more. We give a realistic estimate after a short assessment.
Yes. During testing the old system keeps running. At go-live we plan a short cutover; we document and support so your team can adapt.
We migrate databases and interfaces into the new architecture. Data continuity and clear documentation are part of our standard delivery.

Your Next Step
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You'll receive a structured proposal with effort estimates and recommended next steps.
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Short portrait of Groenewold IT Solutions – team, how we work and what we offer; complements this page for a quick overview before you get in touch.
Vb6 Replacement is most effective when it is aligned with your business goals, existing systems, and team capabilities. At Groenewold IT Solutions we combine product thinking, clear architecture, and hands-on delivery so that every project delivers measurable value. We address operational, compliance, and performance aspects early so that later releases stay on track.
Our approach to Vb6 Replacement emphasises transparent backlogs, close collaboration with your stakeholders, and incremental delivery. Whether you need a discovery workshop, an MVP, or a full-scale implementation, we define scope, effort, and success criteria up front. With over 250 completed projects we have the experience to recommend the right level of investment and the right next steps for your situation.
Explore our services overview for the full portfolio, our topic pages for in-depth articles linked to each service, and the IT Glossary for key terms. If you would like to discuss your project, we are happy to clarify scope, priorities, and a realistic timeline in a short consultation.
Book a no-obligation call about your project – or start with our project check for a structured first assessment.
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