Prepare for major updates with preview environments

About one month before a major update, you can try out new functionality in preview environments. Preview environments are essentially Business Central online sandbox environments that you create on a preview version of the application. When you create the new sandbox environment, choose the preview version marked as (Preview) from the version list. This way, you get a new sandbox environment with a preview version of the application.

You must have access to Microsoft Collaborate in order to submit your feedback and report any potential issues that you discover in the preview version of the application. For more information about getting access to Collaborate, see Register on Collaborate.


Previews roll out gradually across the world, so if the option is not showing up for you today, please try again tomorrow.

The newly created preview sandbox environment contains demonstration company data. Trying the preview on a copy of your current production data is not yet supported; nor is testing the upgrade from your current version to the preview. However, you can use the newly created sandbox environment for exploring and learning the new product capabilities, as well as validating that your per-tenant extensions are still working as expected.

If you run your tests on a preview environment one month before the announced major release of Business Central, it is more likely that the coming updates of your production environments will go smoother. This way, you, your customers, and your code are better prepared for the official release.

We expect to update the preview version only if we discover critical issues before the major update is generally available for production environments. Apart from these potential fixes, we do not expect any further changes to the product between the preview and the official release. This means that you can start your testing and learning activities immediately, without waiting for the official release.


You will be able to test the update on a copy of your production data in a sandbox environment when we release the new update in production in April or October, respectively. When the official release becomes available, you can continue your tests on that version. You will no longer be able to create new preview sandboxes.


The preview version as well as all sandbox environments that are based on it will be removed 30 days after the official release becomes available.

Practice and test

Once you have the preview, start using it:

  1. Review the new functionality. Try it out, and begin training employees on the new features that are coming.

  2. Validate your extensions.

    Upload and install your extensions into the sandbox environments created on the preview version and run through the functionality. Verify that the customization continues to work and is compatible with the new version.

    In rare cases, if you discover any changes required for your per-tenant extension to become compatible with the next release, apply the changes to your app, test it again on a sandbox environment running on a preview version. Then, if tests complete successfully, upload the app into your production environment, setting Deploy to field to Next major version. This way the compatible version of your app will be used when you schedule upgrade of your production environment to the new major update once it becomes available.

  3. Test the quality. If you run into issues related to the preview, please provide feedback on Collaborate.

Finally, as always, if you have ideas for features you would like to see in future releases of Business Central, let us know at

Provide feedback on the preview

We need your feedback on the preview! Let us know about your experiences with the new version. You can provide feedback on Microsoft Collaborate:

  1. Browse to

  2. If you have not registered before, please complete the registration form to access Collaborate

  3. Choose Engagements, and then choose Join

  4. Under the Ready! for Dynamics 365 Business Central program, find 2020 release wave 2 Preview in the list of available engagements, and choose Join

Once you have joined the preview engagement, you can submit your feedback by filling in the form. You must specify if you are reporting a technical issue, a translation issue, or a documentation issue. The default severity is set to 3, which is the normal severity for most defects and means that the system is not crashing and users are not blocked from doing their work, but you can change that. When we have triaged your issue, you can see changes in Collaborate.


If you get stuck trying to join Collaborate, please contact with as many details about the error that you got and other circumstances.

See also

Major Updates of Business Central Online
Managing Major and Minor Updates of Business Central Online
Working with Administration Tools
The Business Central Administration Center
Managing Environments
Managing Tenant Notifications
Register on Collaborate