A Dynamics 365 upgrade is one of those projects that organisations often approach defensively, focused on what could go wrong rather than what could go right. That instinct is understandable. Upgrades carry real risk: data loss, broken integrations, disrupted workflows, and frustrated users. But when planned and executed well, an upgrade does far more than bring the system up to date. It creates a genuine opportunity to rethink how the platform supports the business, remove years of accumulated technical debt, and position the organisation to take advantage of capabilities that were not available when the original implementation went live.
The gap between older and newer versions of Dynamics 365 is now significant. As Forbes reports, Microsoft’s Georg Glantschnig, VP of Dynamics 365 Finance, confirmed that Copilot can draft project status reports in seconds rather than the two to three hours it previously took manually. That kind of productivity shift is only available to organisations running a current version of the platform. The difference between a disruptive upgrade and a productive one comes down to preparation, clarity of purpose, and disciplined execution at every stage.
Step 1: Assess Your Current Dynamics 365 Environment Before Upgrading
Before any upgrade work begins, a thorough assessment of the existing environment is the single most important thing you can do. Many organisations skip this step or treat it as a formality. That is a mistake that tends to surface later as unexpected costs, delayed timelines, and post-go-live issues that could have been identified weeks earlier.
A pre-upgrade audit should cover:
- Current version and the gap to the target version – the larger the gap, the more complex the upgrade path
- All active customisations, including custom entities, workflows, plugins, and business process flows
- Every third-party integration and how each one connects to Dynamics
- Current data volumes and existing data quality issues
- User activity logs to identify which parts of the system are actively used versus which have been abandoned
This assessment gives you an accurate picture of what you are working with. It also gives the upgrade team the information they need to scope the work correctly, identify dependencies, and flag risks before they become problems.
Step 2: Define Clear Goals for Your Dynamics 365 Upgrade
An upgrade without clearly defined goals is an upgrade that will underdeliver. The technical work of moving from one version to another is only part of what a Dynamics 365 upgrade delivers. The business value comes from what you do with the new capabilities once the migration is complete.
Before the project begins, define what success looks like in concrete terms. Is the primary goal to improve sales pipeline visibility? To enable integration with a new data platform? To reduce the manual effort involved in reporting? To support a larger user base without performance degradation? The answers to these questions should shape every decision made during the upgrade, from which features to configure to which legacy customisations are worth preserving.
Well-defined upgrade goals also create accountability. They give the project team a clear target to work toward and give stakeholders a basis for evaluating whether the upgrade delivered what it was supposed to deliver. Vague goals produce vague outcomes. Specific, measurable objectives produce upgrades that justify the investment. This is also the stage at which organisations working with Dynamics 365 upgrade services should align on scope, deliverables, and success criteria with their implementation partner. It should ensure both sides are working toward the same outcomes from day one.
Step 3: Plan Your Data Migration and Customisation Strategy
Data migration and customisation management are where most Dynamics 365 upgrades run into trouble. Both require careful planning and a clear strategy before any technical work begins.
How to Handle Custom Code and Third-Party Integrations During an Upgrade
Custom code written for an older version of Dynamics 365 does not always behave as expected in a newer environment. APIs change, deprecated features disappear, and plugins that worked reliably for years can break without warning. Before migrating, audit every customisation and assess whether it needs to be rewritten, replaced with native functionality, or retired entirely.
Third-party integrations require the same scrutiny. Check the compatibility of each integration with the target version of Dynamics 365. Where connectors or APIs have changed, plan the remediation work before go-live rather than discovering incompatibilities during testing. Integrations that have not been actively maintained are often better replaced than patched.
Data Cleansing Before Migration: What to Do and What to Skip
Not all data is worth migrating. One of the most common mistakes in a Dynamics 365 upgrade is treating data migration as a lift-and-shift exercise, moving everything from the old environment into the new one without questioning whether it still has value.
Before migration, identify duplicate records, incomplete records, and records that are so outdated they are no longer relevant. Define clear rules for what gets migrated, what gets archived, and what gets deleted. This reduces migration complexity, improves post-upgrade data quality, and ensures the new environment starts with a cleaner foundation than the old one.
Step 4: Test Thoroughly Before Going Live With Dynamics 365
Testing is where the quality of the upgrade is determined. Insufficient testing is the most common reason upgrades fail to meet expectations, and it is also one of the most preventable causes of post-go-live disruption.
A Dynamics 365 upgrade should go through multiple testing phases:
| Testing phase | Purpose | Who is involved |
| Unit testing | Validates that individual components work as expected | Technical team |
| Integration testing | Checks that connected systems and third-party tools function correctly | Technical team and integration partners |
| User acceptance testing (UAT) | Validates real-world scenarios against user expectations | End users and business stakeholders |
| Performance testing | Identifies bottlenecks under high data volumes or user concurrency | Technical team |
UAT deserves particular attention. The people who use Dynamics 365 every day will find issues that technical testers miss, and their confidence in the upgraded system is a significant factor in post-launch adoption. Build UAT time into the project schedule from the start, not as an afterthought when the technical work is running over time. Identifying performance bottlenecks in a test environment is significantly cheaper and less disruptive than discovering them in production.
Step 5: Manage User Adoption After Your Dynamics 365 Upgrade
A technically successful upgrade that users do not adopt is still a failed upgrade. Change management is one of the most consistently underinvested areas in Dynamics 365 upgrade projects, and the consequences tend to show up in the weeks and months after go-live, as usage patterns revert to workarounds and the new capabilities go unused.
Effective adoption management starts before go-live. Communicate the upgrade to affected users early, explain what is changing and why, and set realistic expectations about the learning curve. Training should be specific to the changes users will actually encounter, not a generic walkthrough of the platform. Role-based training, short reference guides, and accessible post-go-live support all make a meaningful difference to how quickly users become productive in the upgraded environment. Organisations that hire offshore software developers to support training content development and post-go-live helpdesk capacity often find the transition period far less disruptive than expected. Having dedicated external resource handling support queries and documentation frees internal teams to focus on the work that only they can do.
Step 6: Optimise and Iterate After the Upgrade Is Complete
Going live is not the end of the project. The period immediately after a Dynamics 365 upgrade is one of the best opportunities for meaningful improvement, because users are engaged with the system, issues surface quickly, and the upgrade itself has created space to implement changes that were not possible before.
Establish a structured post-upgrade review process. Gather feedback from users across all affected teams. Monitor system performance and usage data. Identify any workflows or configurations that are not performing as expected, and address them promptly. Build a short-term optimisation cycle into the project plan, typically covering the first 60 to 90 days after go-live, so that issues are resolved and improvements are made while the upgrade team is still engaged.
Conclusion: Treat Your Dynamics 365 Upgrade as a Starting Point, Not a Finish Line
The organisations that get the most value from a Dynamics 365 upgrade are the ones that treat it as the beginning of a more capable, better-configured environment rather than a project to be completed and forgotten. Thorough preparation, clear objectives, disciplined testing, and genuine investment in user adoption turn what could be a disruptive technical exercise into a meaningful step forward for the business. The platform has more to offer than most organisations currently use. A well-executed upgrade is the clearest path to closing that gap.
