Business Central Norway Delocalization: W1 Extension Migration Planned for March 2027

What the roadmap says​

Roadmap item 573623 describes the Norwegian localized version as a set of extensions on the W1 base app. It says the release includes a data upgrade feature to ease the move from the previous localization.

Microsoft calls the release a step toward full delocalization, which it says helps ISVs reach a wider market. Some features will move into the base app or become global apps. Others will stay specific to Norway. The roadmap names non-deductible VAT as one local feature that will be migrated to a global one.

The listed details are:

• Status: In development.
• Preview: December 2026.
• General availability: March 2027.
• Platform and cloud: Web, Worldwide (Standard Multi-Tenant).
• Release rings: Preview and General Availability.

Microsoft's roadmap page says all dates are estimates and subject to change. These are plans, not a shipped feature.

Norway is already a supported market​

This is a change in how the Norwegian localization is packaged. Norway is already supported. Microsoft's availability documentation lists Norwegian Bokmål (nb-NO) with platform translation available and the application translation provided by Microsoft. The same page lists Norway as a Microsoft-localized country with environment code NO and an Azure geography of Norway.

Language and country version are separate things. Microsoft's own examples show that using Business Central in another language doesn't change which country version you run. The roadmap change concerns the country version, not the display language.

The same path other countries have taken​

Microsoft has done this before, and the pattern is documented:

• The Sweden BaseApp was migrated to W1 with Business Central 2023 release wave 1, and its localization features are now available as apps.
• The Iceland BaseApp moved to W1 with 2023 release wave 2 (version 23.3). Existing users can enable new features through Feature Management.
• The United Kingdom BaseApp was migrated to W1 with 2025 release wave 2. Its localization features are available as apps, and users can enable new features through Feature Management.

The wording on the UK roadmap entry was almost identical to the Norway text. The azurecurve blog, summarizing the UK item, said the localized version was delivered as extensions on the W1 base app with a data upgrade. It described the release as a step toward full delocalization, with some features moving to the base app or global apps and others staying market-specific.

I'm drawing a comparison here, not a prediction. Norway may follow the same route as Sweden, Iceland and the UK, but Microsoft hasn't said so. Norwegian customers should watch for the same kind of Feature Management steps those markets used.

Why Microsoft is doing this​

This is my analysis, not Microsoft's statement. A country-specific base app means ISV solutions have to be built, tested and certified against more than one code base. Moving local logic into extensions lets partners target one W1 base app. Microsoft's guidance for localization developers points the same way. It recommends using the worldwide frameworks for areas such as VAT reports, banking formats and data exchange, where most functionality is common and only some rules are local.

Non-deductible VAT is a good example of why this matters. If it becomes a global feature, other markets could use it, and partners wouldn't need to rebuild it country by country. Microsoft hasn't said how it will work, which scenarios it will cover, or whether every country will get it.

What Norwegian customers and partners should do now​

Microsoft hasn't published an installation or migration procedure for this release, so there are no steps to follow yet. The roadmap doesn't say:

• which extensions will be installed, or how they will be distributed;
• whether existing environments get them automatically or an administrator has to act;
• which source versions the data upgrade supports;
• how the upgrade treats customizations and third-party extensions;
• whether on-premises deployments are covered. The roadmap lists only Web and the Worldwide multi-tenant cloud.

Practical preparation based on general Business Central practice:

1. Inventory your extensions. List every per-tenant extension and AppSource app that touches Norwegian-specific objects, VAT, or bank formats.
2. Plan to test in a sandbox first. The December 2026 preview is the natural time to try this before March 2027, assuming the dates hold.
3. Review non-deductible VAT setup. Document how you handle it today, so you can compare behavior after the move.
4. Ask your ISVs. Find out whether their apps depend on the current Norwegian base app objects.
5. Check release notes before upgrading. Microsoft's release plans and documentation will carry the real prerequisites.

Extensions also carry some general caveats. Microsoft's guidance on installing apps warns that apps can have different test, compliance and security standards than Business Central itself. That guidance applies to apps in general. It doesn't suggest a particular risk in Microsoft's own Norwegian extensions, and Microsoft-published localization apps are a different case from third-party ones.

Bottom line​

Microsoft plans to move Norway onto the same extension-based localization model it has already used for Sweden, Iceland and the UK. Preview is planned for December 2026 and general availability for March 2027. Until Microsoft publishes release notes and upgrade documentation, the concrete effects on VAT, ISV compatibility and existing customizations remain unconfirmed. Treat the dates as estimates.