We want to upgrade Microsoft Server 2016 Standard to Windows Server 2019 Standard

Hello ROBERT Gumienny,

Upgrading from Windows Server 2016 Standard to Windows Server 2019 is supported as an in-place upgrade, provided you are moving between the same edition (Standard to Standard, Datacenter to Datacenter). You cannot cross editions during the upgrade. The process requires that the 2016 installation is fully patched and stable before starting.

You should mount the Windows Server 2019 installation media and run setup.exe directly from within the running 2016 environment. During the setup wizard, select “Keep personal files and apps” to preserve roles and data. The installer will detect the existing edition and allow the upgrade path if it matches. If you attempt to upgrade Standard to Datacenter, or Essentials to Standard, the option will not be available.

Before proceeding, ensure that you have a full backup of the system and configuration, especially if the server is running critical roles such as Active Directory, DNS, or Hyper-V. Some roles may require reinstallation or reconfiguration after the upgrade. For example, Remote Desktop Services and certain legacy features may need to be revalidated. Also confirm that any third-party applications or drivers are compatible with Server 2019.

If you are using KMS or MAK activation, you will need a valid Windows Server 2019 Standard product key to activate after the upgrade. The upgrade process itself does not consume CALs, but CALs must be updated to 2019 as well to remain compliant.

In short, yes, you can upgrade directly from Server 2016 Standard to Server 2019 Standard using the in-place upgrade path. Run the setup from the 2019 media, choose the upgrade option, and ensure you have backups and a valid license key ready. If you encounter a block, it is usually due to edition mismatch or missing updates on the 2016 system.

I hope you've found something useful here. If it helps you get more insight into the issue, it's appreciated to accept the answer. Should you have more questions, feel free to leave a message. Have a nice day!

Domic Vo

To upgrade from Windows Server 2016 Standard to Windows Server 2019 Standard while keeping your files, you can perform an in-place upgrade. This method allows you to upgrade your existing installation without losing your data, server roles, and settings. You will need the installation media for Windows Server 2019 Standard, which can be in the form of an ISO file.

Since you have already purchased a license key for Windows Server 2019 Standard, you can obtain the ISO from the Microsoft Evaluation Center or through your Volume Licensing Service Center if applicable. It is important to ensure that the ISO you use is the retail version, not the evaluation version, to properly utilize your license key during the upgrade process.

Make sure to back up your data before proceeding with the upgrade to avoid any potential data loss during the process.

References:

• Upgrade and conversion options for Windows Server
• Perform an in-place upgrade of Windows Server