When you upgrade on-premises deployments to this update, you and your customers must use a new license that convers more scenarios than the one for the original release in October 2018.
Why this new license?
In cumulative update 1 (CU 1), we have enabled new licensing scenarios so that Business Central is optimized for licenses with named users. This was not fully supported in the RTM version that was made available on October 1, 2018, and that is why CU 1 requires a new license. You can pull new licenses when you upgrade customers to CU 1.
The new licenses are required for cumulative update 1 and later versions of Business Central and are not backwards compatible with earlier versions of Business Central.
What has changed?
With CU 1, Business Central supports the product line IDs 49, 74, 75, and 76 for named users. See Microsoft Dynamics 365 Business Central Pricing and Licensing for more information.
This cumulative update includes all hotfixes and regulatory features that have been released for Microsoft Dynamics 365 Business Central, including hotfixes and regulatory features that were released in previous cumulative updates.
This cumulative update replaces previously released cumulative updates. You should always install the latest cumulative update.
It may be necessary to update your license after implementing this hotfix to gain access to new objects included in this or a previous cumulative update (this only applies to customer licenses).
For a list of cumulative updates released for Microsoft Dynamics 365 Business Central, see released cumulative updates for Microsoft Dynamics 365 Business Central. Cumulative updates are intended for new and existing customers who are running Microsoft Dynamics Released Cumulative Updates for Microsoft Dynamics 365 Business Central.
Important
We recommend that you contact your Microsoft Dynamics Partner before you install hotfixes or updates. It is important to verify that your environment is compatible with the hotfixes or updates being installed. A hotfix or update may cause interoperability issues with customizations and third-party products that work with your Microsoft Dynamics 365 Business Central solution.
Problems that are resolved in this cumulative update
The following problems are resolved in this cumulative update:
Platform hotfixes