Because of its flexibility, scalability and integration with the Microsoft ecosystem, Microsoft Dynamics 365 has become one of the most popular ERP platforms in the world. Yet despite the platform’s capabilities, many D365 implementations fail to deliver the expected results.
After almost 20 years recruiting D365 professionals across the UK and Europe, I’ve seen many similar patterns across all ERPs. Implementations usually struggle because of one or more of the following reasons:
- Over customisation to align with business processes
- Inadequate talent or wrong hires
- Weak leadership with poor change adoption
- Data migration and data quality issues
In fact, Gartner predicts that by 2027, more than 70% of recently implemented ERP initiatives will fail to fully achieve their original business case objectives.
So why do so many Dynamics 365 projects run into trouble?
1. Over Customisation and trying to preserve outdated processes
One of the biggest mistakes organisations make is assuming that D365 should adapt to every existing process.
In reality, many legacy processes were created years ago to work around limitations in older systems. When businesses insist on recreating those workflows inside D365, projects become unnecessarily complex.
Excessive customisation creates several problems:
- Increased implementation costs
- Longer project timelines
- Greater testing requirements
- More difficult upgrades
- Higher long-term support costs
As one recurring theme within the Dynamics community suggests, companies often struggle when they attempt to force the platform to mirror outdated ways of working instead of adopting modern best practices.
Microsoft continuously invests in standard functionality across Finance, Supply Chain, Sales, Customer Service, and Business Central. Organisations that leverage native functionality wherever possible tend to experience smoother implementations and lower total cost of ownership.
How to avoid it
A seasoned Solution Architect or Functional Consultant should be willing to challenge the business when necessary.
Before approving any customisation, ask: “Is this process creating business value, or are we simply replicating an old habit?”
A vanilla D365 implementation may not always be feasible, but staying as close to standard D365 functionality as possible will lead to a stronger solution long term.
2. Choosing the wrong Implementation Partner or hiring the wrong people
Technology projects succeed or fail based on the people involved.
Throughout my career in ERP recruitment, I have seen organisations invest millions in software while underestimating the importance of securing the right implementation expertise.
Dynamics 365 projects require a combination of:
- Functional Consultants
- Architects
- Technical specialists
- Project and Programme Managers
- Change Management professionals
- Internal business champions
Unfortunately, many businesses select implementation partners based primarily on cost rather than industry experience or delivery capability.
Others attempt to fill critical roles with underqualified hires to reduce project costs.
The consequences are often severe:
- Poor solution design
- Lack of change and adoption
- Scope creep
- Budget overruns
- Delayed timelines
- User dissatisfaction
- Project fatigue
Human and organisational factors, not technical issues, are the primary causes of ERP failures.
Prosci’s 2025 ‘Unlocking ERP Implementations’ study found that human factors matter 6 times more than technical factors in improving ERP benefits.
I often see organisations treating ERP hiring as a procurement exercise rather than a risk management exercise. Saving money on a critical hire can often end up costing significantly more in delays, rework, poor adoption and project overruns.
When evaluating implementation partners or recruiting project talent, organisations should look beyond certifications and focus on proven delivery experience within their specific industry.
How to avoid it
- Assess partner references carefully.
- Hire consultants with relevant industry experience.
- Invest in strong internal project leadership.
- Avoid building project teams solely around availability or cost.
3. Lack of Executive Sponsorship and poor Change Adoption
Many organisations underestimate how disruptive ERP implementations can be.
New systems change how employees work, report information, collaborate, and make decisions. Without visible leadership support, resistance quickly emerges across the business.
One of the strongest themes raised by experienced ERP professionals is that implementations fail when organisations focus on technology while ignoring change management.
Employees often resist new systems because:
- They were not involved in decisions.
- They do not understand the benefits.
- They fear changes to their role.
- Training is insufficient.
- Existing processes are deeply embedded in the organisation.
Research highlighted by Prosci found that organisations invest 92% of their ERP budget on technical activities and 8% on change management. Yet when 1,618 implementation leaders reflect on what would improve outcomes, human factors outweigh technical considerations 6 to 1.
That statistic alone highlights a major problem.
Successful D365 implementations require executive sponsors who actively communicate the vision, remove obstacles, and reinforce adoption throughout the project lifecycle.
How to avoid it
- Appoint executive sponsors early.
- Build a formal change management programme.
- Communicate regularly with end users.
- Invest heavily in training and user adoption.
- Identify change champions across departments.
4. Data Migration and Data Quality Issues
Data migration is often treated as a technical task.
In reality, it is a business critical activity.
Many organisations discover too late that years of duplicated, incomplete, or inaccurate data exist within their legacy systems.
When poor quality data is migrated into D365, the problems become highly visible:
- Reporting becomes unreliable.
- User confidence declines.
- Operational errors increase.
- Adoption suffers.
Data migration challenges are frequently cited by Dynamics professionals as one of the leading causes of project delays and post go-live issues.
According to Microsoft ERP implementation guidance, organisations themselves must take ownership of critical migration decisions, including data cleansing, validation, testing, and determining what information should be moved into the new platform.
Too often, businesses assume their implementation partner will “fix” the data during migration.
The reality is that poor data quality is a business problem, not a technology problem.
The best data migration specialists will often tell you that cleansing and ownership are far bigger challenges than the migration itself.
How to avoid it
- Begin data cleansing early.
- Assign business owners to critical datasets.
- Conduct multiple migration rehearsals.
- Establish clear data governance policies.
- Validate migrated data before go-live.
Final Thoughts on Why D365 Implementation Fail
When D365 projects struggle or fail to achieve their intended outcomes, the software itself is rarely the root cause.
The most common reasons are:
- Excessive customisation
- Weak implementation partners or project hires
- Lack of executive sponsorship and user adoption
- Data migration and data quality challenges
After almost 20 years recruiting D365 professionals and 25 years recruiting ERP talent overall, one lesson stands out above all others:
The success of a Dynamics 365 implementation depends far more on people, processes and leadership than on technology alone.
Organisations that treat D365 as a business transformation initiative, invest in the right expertise, and focus on adoption from day one are significantly more likely to achieve the outcomes they originally set out to deliver.
At Cedar Stone, we support organisations across the UK and Europe with specialist Dynamics 365, ERP, technology and transformation recruitment. Whether you’re building a project team, replacing a key resource, or preparing for a major ERP programme, securing the right expertise at the right time can significantly reduce delivery risk.
- Website: https://cedarstonerec.com/contact
- Email : peter@cedarstonerec.com
- Call : 020 4600 7766
