VB6 to .NET Migration
Most VB6 apps are tightly connected to legacy COM/ActiveX components and outdated OS stacks, posing a threat to security and consistency.
Thanks to VB6 migration, Corsac removes a major source of outages and enables transparent, well-documented system behaviour that remains stable and secure even when the teams change.
AWS Certified Cloud Practitioner
PCI DSS Compliance
HIPAA Compliant
Azure Solution Architect Expert
SOC 2 Type II Certification
GDPR certification
Azure Administrator Associate
Azure Developer Associate
Azure Fundamentals
Dependency on fragile environments; even small environmental changes can lead to a system crash.
VB6 logic is often embedded into UI event handlers, so refactoring becomes too risky.
VB6 expertise is shrinking, creating key-person dependency and rising maintenance risk.
Lack of modern authentication models and encryption standards leads to compliance gaps.
Inability to implement automation, real-time analytics, and integration with modern APIs.
With 18+ years of experience, we apply a pragmatic approach for converting VB to .NET. It helps preserve and evolve what works great, while eliminating obsolete components and other growth blockers.
Reduced hotfix release time by
70%Achieved backlog visibility of
100%
Reduced code duplication and raised development efficiency by
75%Lower average time gap in cross-platform feature delivery by
80%
VB6 to .NET migration services by Corsac turn obsolete systems into controllable, scalable, and secure solutions.
Reduce VB6 runtime dependencies
Minimize outages caused by brittle COM components
Eliminate dependencies on individual experts
Strengthen security and ensure audit readiness
Enable seamless integration with modern platforms and APIs
Make system updates safe, controlled, and predictable
Prolong the system’s lifespan without complete re-engineering
Separate tightly coupled UI, logic, and data layers
Move from COM/ActiveX to modern, supportable .NET libraries
Reorganize procedural VB6 logic into modular services
Implement structured error handling and logging
Support API-driven integrations
Make testing and maintenance seamless
Adapt systems for cloud or hybrid hosting
Let us help you rebuild what’s holding you back.
VB6 to VB .NET migration by Corsac is not just a mechanical code transition. We preserve system behavior to avoid hidden regressions. We operate inside your Git and CI/CD without blocking your team’s performance.
We aren’t a full-stack agency. We’ve built our team, processes, and tech strategy specifically to tackle legacy issues and help mid-market players scale and innovate.
We integrate with your workflows, minimizing interference with your developers. While utilizing your Git, CI/CD, and tools, we operate independently, letting your team focus on their work.
Your aging system drains your business resources through slow hiring, security gaps, and delayed launches. We reduce these “dark tech debt” losses before they impact your revenue.
We remove legacy barriers preparing your systems for advanced tech. You can embrace new tools with the future-ready and ROI-driven architecture.
Modernization efforts will be ineffective if the core issue is institutional rigidity. We reveal hidden limits and help grow with flexibility.
We treat your system efficiently: evolve the functioning parts and replace only the ones that require change.
Corsac’s experts conduct a deep audit of VB6 code, forms, dependencies, data flows, and undocumented behavior. Our approach goes far beyond simple analysis of components. We investigate real system behavior in production.
Based on the defined .NET target architecture, we build a comprehensive replacement strategy and outline migration phases to keep operational integrity, continuity, and lasting ownership.
We conduct a deep transformation by refactoring business logic from VB6 forms to make it cleanly separated
The code is converted into .NET modules that increase overall system maintainability and scalability
Data access and schemas are modernized to enhance speed and concurrency
With parallel validation, we help mitigate risks and reduce downtime
We finalize migration by fine-tuning performance and providing well-structured, clear documentation, so your internal team can manage the upgraded system independently and confidently.
Book an expert consultation to uncover gaps in your system. Let us modernize your business to its maximum potential.
We focus on modernization for companies unable to grow due to aging systems
We replace only what must be changed, protecting your investment and CTO’s credibility.
HIPAA, HL7/FHIR, SOC2, GDPR, ISO compliance is integrated into every stage.
Integrating into your Git, CI/CD, and workflow tools, we make modernization visible, testable, and traceable
We uncover hidden costs, feature delays, and security gaps and offer ways of their removal
By providing CEOs stakeholder-ready roadmaps and progress metrics, we enable well-grounded transformation
They fulfill your task without seeking to address the issue at the root
Dispersing the focus, they fail to meet specific Healthcare G and other industry requirements
Generalized practices, regardless of the product, team, or business specifics
Initiate full rewrites instead of using the working parts and considering business context
Insufficient collaboration leads to poor handover, with documentation debt and weak enablement.
Development happens in isolation, prioritizing code delivery over actual business value.
Sure. To successfully convert VB6 to VB .NET, we start with a comprehensive audit that includes the detection of security and compliance vulnerabilities. We uncover fragile patterns, hidden dependencies, hard-coded components, insecure connections, etc. As a result, we have a clear, prioritized roadmap of what should be improved to ensure audit and compliance readiness.
Yes. We apply an incremental approach to VB6 to VB .NET migration, no matter how large and complex your system is. It helps us ensure a safe transition process, address high-risk modules first, implement changes at the level of separate modules, run parallel operations, validate each phase before proceeding to the next steps, etc.
Yes. We don’t just technically conduct VB6 to .NET migration. We prepare all the necessary documentation and provide comprehensive training for your internal team to help them adapt the .NET system faster, minimize errors, manage the system independently, and ensure stable growth.
Corsac experts always start by analyzing root causes for your tech stagnation and identifying real reasons for the costly maintenance of your system. We uncover fragile dependencies and OS features, eliminate vendor and expert lock-in, decouple UI and business logic, build a modular architecture that is easier to change and scale, etc.
To translate VB6 to VB .NET with minimized downtime, we plan the process carefully, implement incremental migration that helps change particular components without the need to disrupt the whole system, provide controlled cutover, and provide strong ongoing support to fix any issues as fast as possible.
