Proven Methods to Reduce Business Central Upgrade Time by 40%

Business Central upgrades today are expected to be smoother. With structured release waves and continuous updates, the process is designed to feel predictable and manageable.

But once teams actually begin preparing for an upgrade, a different picture often starts to emerge.

We have been looking at how recent upgrades play out across different environments, and one thing stands out. The biggest delays are rarely caused by large, visible issues. Instead, they come from smaller, less obvious factors that only surface during the upgrade itself.

• A table holding legacy extension data that blocks progress.
• An app that behaves differently during upgrade execution.
• A schema change that conflicts with existing customizations.

Individually, these do not seem like major problems. But during an upgrade window, they can quickly slow things down or bring the process to a halt.

Before treating an upgrade as a routine step, it is worth looking at the kinds of issues that have historically appeared in real environments and what they reveal about how prepared the system really is.

Why Business Central Upgrades Used to Take So Long

To understand how upgrades can be accelerated today, it helps to look at what has traditionally slowed them down.

Most delays were not caused by a single issue. They came from a mix of architectural constraints, hidden dependencies, and limited visibility into how the system actually behaved under change.

Heavy Customizations in Legacy NAV Environments

Older NAV implementations were heavily customized directly within the base application.

These customizations were tightly coupled with core objects, which meant even a small platform change could require significant rework. When the AL extension model was introduced, those customizations had to be restructured into modular extensions.

For organizations with years of accumulated changes, this was not a simple migration. It often meant rewriting large portions of the system, increasing both effort and risk.

Limited Visibility Into What Was Actually Slowing the System

One of the less discussed challenges was the lack of clear visibility into system behavior.

When performance issues appeared during upgrades or testing, teams often assumed the platform itself was the problem. In reality, the issue could come from a specific extension, background process, or inefficient code path.

Without proper diagnostic tools, identifying the root cause took time. Teams relied on guesswork instead of data, which slowed troubleshooting and delayed decision-making.

This becomes especially relevant during upgrades, where performance bottlenecks in posting, data processing, or integrations can extend testing cycles significantly.

Manual Extension Validation

Validation has historically been one of the biggest bottlenecks.

Every upgrade required teams to manually verify whether extensions would work with the new release. This included checking dependencies, obsolete APIs, event conflicts, and object overlaps.

Issues were often discovered late, sometimes during the final stages of deployment. Fixing them at that point added pressure and extended timelines.

Even today, organizations that rely heavily on manual validation tend to experience longer upgrade cycles.

AppSource and ISV Dependencies

Most Business Central environments depend on multiple third-party applications.

If even one of those extensions is not compatible with the new version, the entire upgrade can be delayed. Teams often have to wait for vendors to release updated versions before proceeding.

In complex environments with several ISV dependencies, this creates a chain effect where one delay impacts the entire upgrade schedule.

Data and Schema-Level Conflicts

Upgrades are not just about code. Data structure changes can introduce unexpected issues.

For example, tables may be reclassified, fields renamed, or extensions updated in ways that conflict with existing data. In some cases, legacy data stored in system tables can block the upgrade entirely if it no longer aligns with the new version's requirements.

Similarly, schema changes in Microsoft or third-party extensions can prevent synchronization if custom logic still depends on older structures.

These issues are often not visible until the upgrade is already underway, making them harder to resolve quickly.

Workflow, Integration, and Background Process Breakage

Even when the core upgrade succeeds, surrounding processes can fail quietly.

Approval workflows, API integrations, Power Automate flows, and reporting pipelines all depend on stable data structures and endpoints. Changes introduced during upgrades can disrupt these connections without immediate errors.

Background processes such as web service calls can also impact performance during testing. Because they run without direct user visibility, they often go unnoticed until they begin slowing down key operations.

This leads to issues surfacing late, either during user testing or after go-live.

Limited and Inefficient Testing

Testing has traditionally been constrained by time and resources.

Teams often focused on a subset of workflows, using limited data sets. When issues appeared later in real usage scenarios, they had to revisit earlier upgrade steps.

Without repeatable and data-driven testing, each cycle introduced delays and uncertainty.

No Realistic Simulation Before Production

In many cases, upgrades were executed directly in production environments or in limited test setups that did not reflect real-world conditions.

Without a production-like sandbox, issues had to be resolved in real time. This increased downtime, risk, and recovery effort.

Today, teams that simulate upgrades in realistic environments significantly reduce this uncertainty, but historically, this was not a standard practice.

Five Practical Ways Organizations Are Reducing Business Central Upgrade Time

Modern upgrade acceleration is not about rushing the process. It is about removing the points where upgrades usually stall: extension conflicts, data upgrade bottlenecks, environment-specific surprises, and late performance diagnosis. Teams that cut upgrade time consistently tend to follow a more engineered, repeatable approach.

1. Validate extensions and dependencies before the upgrade starts

A large part of upgrade delays actually starts well before the upgrade itself begins. The issue is usually not the platform alone, but everything built around it.

Most Business Central environments include multiple apps. These can be core Microsoft apps, AppSource apps, and custom-built extensions. All of them need to be updated in the right order for the upgrade to work smoothly.

If teams wait until the upgrade window to check this, problems show up too late. Things like app dependencies not aligning, outdated components, sync issues, or incompatible versions can immediately slow things down or stop the upgrade altogether. That is why checking whether all apps are ready beforehand is so important.

This becomes even more critical in newer versions, where the structure of apps continues to evolve. There are simply more moving parts to manage.

Teams that upgrade faster usually take a more organized approach. They first identify which apps are actually being used. Then they separate core system apps from additional extensions and review them individually. They also check whether any data or structural changes could cause issues during the upgrade.

For example, upgrades can fail if:

• Old data from extensions is still stored in system tables
• Tables or fields have been renamed in newer versions
• Upgrade logic still depends on older data structures

These are not always obvious at first, but they can completely block an upgrade that otherwise seems ready.

That is why extension validation is not just a technical step for developers. It is one of the most important ways to keep the upgrade on schedule and avoid last-minute surprises.

2. Run the full upgrade in a production-like sandbox first

If you want your upgrade to go smoothly, avoid testing directly in your live environment.

Business Central gives you both production and sandbox environments for a reason. Most upgrade issues are not generic. They are specific to your data, your extensions, and your setup.

When you run the upgrade in a sandbox that closely matches your production system, you can identify problems such as:

• Posting errors
• Permission issues
• Integration failures
• Unexpected behavior from extensions

These issues often do not appear in a clean or limited test environment. They show up only when real data is involved.

A full dry run also helps you uncover deeper problems that can slow down your upgrade. For example:

• Data that does not align with the new version
• Extensions that fail during synchronization
• Upgrade steps that take longer than expected

By running the complete upgrade process in a production-like sandbox, you can clearly see where time is being spent and where the risks are. This means you will have a clear understanding of what might go wrong and how to handle it.

Instead of assuming the production upgrade will go smoothly, you enter it with a clear understanding of

3. Reduce upgrade-code and data-migration time with bulk methods, not row-by-row logic

During an upgrade, your system often needs to update or move large amounts of data. This usually happens when extensions introduce changes in tables, fields, or overall structure.

The delay comes from how this data is handled.

If your upgrade processes data one record at a time, it can take a lot of time, especially when you are working with large datasets.

To avoid this, you can use a faster approach. Business Central provides tools like DataTransfer that are designed specifically for upgrades. Instead of handling data one row at a time, you can process large sets of data together.

This makes a significant difference. Tasks that would normally take hours can be completed much faster, helping you stay within your upgrade window. You also do not have to do everything during the upgrade itself. If some data updates are not critical for the system to run, you can move them outside the main upgrade process and handle them afterward.

By processing data in bulk and separating nonessential work, you can prevent data handling from becoming the main reason your upgrade gets delayed.

4. Use SQL-level support techniques carefully for rollback, reconciliation, and investigation

In more complex upgrades, especially on-premises or older NAV to Business Central setups, the database layer can help you move faster if you use it in the right way.

You can use techniques such as:

• Database snapshots to quickly return to an earlier state
• Cross-database queries to compare old and new data
• System tables to find table and field details without manual searching

These are useful when you need to retry upgrade steps, compare data before and after the upgrade, or understand how tables and extensions are structured. Instead of spending hours tracing issues manually, you can identify and fix problems much faster.

However, this does not mean you should rely on SQL for the actual upgrade process.

Business Central upgrades are designed to follow a specific path. This includes publishing apps, syncing them, and running upgrade code in a controlled way. Direct SQL changes are not meant to replace this process.

The right approach is to use SQL only where it makes sense. You can use it to:

• Roll back quickly if something goes wrong
• Validate and compare data
• Investigate issues in detail

At the same time, keep your upgrade flow aligned with Business Central's standard method.

5. Measure performance and failure causes with telemetry and profilers instead of guesswork

One of the main reasons your upgrade takes longer is that you may not clearly know what is causing the delay.

You might notice that something feels slow during the upgrade or testing phase, but the actual reason could be different from what you expect. It could be:

• An extension
• A background web service
• A posting process
• A specific function inside the system

Instead of guessing, Business Central gives you tools to measure this properly. You can use the Performance Profiler and the Scheduled Performance Profiler to track where time is actually being spent.

To get accurate results, you should start recording right before the slow action begins and stop it as soon as it ends. This helps you capture the exact part of the system that is causing the delay.

This becomes important during upgrades because performance issues and failures are often identified too late.

You can also use telemetry to understand why something failed. For example, you can check whether the issue was caused by:

• The upgrade timing window
• A long-running extension
• Another process inside the system

Another key advantage is clarity. You can separate whether the delay is coming from the platform itself or from an extension or custom process. This is especially important when third-party apps are involved.

Final Thought

As Business Central continues to evolve with AI capabilities, deeper integrations, and new productivity features, staying ready for upgrades is no longer optional.

Each release wave brings changes that can affect your data, extensions, integrations, and workflows in different ways. That is why preparation needs to be aligned with the specific version you are planning to move to.

You need a clear understanding of your environment to answer two critical questions:

• How smoothly can this upgrade run in your current setup
• Where are you likely to face issues or delays

When you can identify these early, you avoid last-minute blockers and reduce the risk of disruption during the upgrade window.

That is where Nalashaa can support you. Our team helps you assess your environment, identify risks, and prepare your upgrade path so you can move to the next release with clarity and control, not uncertainty.

All you need to do is share your requirements with us below.

Our experts will connect with you to schedule a discovery call to assess your environment, identify risks, and outline a clear path forward for your upgrade.