Microsoft 365 Apps migration from Windows Server


The information in this article is for organizations who are hosting Microsoft 365 Apps on Windows Server 2019 or Windows Server 2016.

Microsoft 365 Apps is supported on Windows Server 2019 and Windows Server 2016 only until October 2025.[1]

If you've deployed Microsoft 365 Apps to Windows Server 2019 or Windows Server 2016, you'll need to migrate to another hosting solution before that support ends. This migration is required to stay current and maintain support as described in the Modern Lifecycle Policy.

Direct deployment of Microsoft 365 Apps isn't supported on Windows Server 2022 as it's a fixed, non-changing operating system.[2] However, it's possible to host virtual Windows client devices with Microsoft 365 Apps on Windows Server 2022.

There are other migration paths available that may better meet your technical and business requirements. To maintain support for Microsoft 365 Apps beyond October 2025, we recommend moving to one of the following client hosting solutions:

Windows 365

Windows 365 is a complete software-as-service (SaaS) solution that securely streams your Windows experience (including your personalized apps, content, and settings) from the Microsoft cloud to any device.

The Windows 365 service hosts Cloud PCs, which are highly available, optimized, and scalable virtual machines that can provide your users with a rich Windows desktop experience.

For more information on Windows 365 plans, and Cloud PC configurations available, visit the Windows 365 Plans and Pricing page.

Windows 365 requires no virtualization expertise and enables you to do the following:

  • Manage Cloud PCs in Microsoft Endpoint Manager like other supported devices, including Microsoft 365 Apps.

  • Choose pre-configured Cloud PCs (including RAM, CPU, and storage), and then use resize as needs change.

  • Automatically provision on-demand Cloud PCs using standard gallery images or custom images.

  • Request assistance from Microsoft on application issues with App Assure at no additional cost.

  • Purchase Windows 365 licenses per user for a fixed monthly fee.

For more information about Windows 365 Enterprise, see the following resources:

Azure Virtual Desktop

Azure Virtual Desktop is a highly flexible desktop and app virtualization service that runs on the cloud. It provides you with full control, via the Azure portal, to customize virtual desktop management and deployment based on your organization’s needs.

Azure Virtual Desktop enables you to do the following:

  • Create a full desktop virtualization environment in your Azure subscription without running any gateway servers.

  • Reduce costs and operating system overhead with the new Windows 11 and Windows 10 Enterprise multi-session capability.

  • Maintain full control over management and deployment, plus options for Citrix and VMware integration.

  • Use standard gallery images or create custom images.

  • Request assistance from Microsoft on application issues with App Assure at no additional cost.

  • Pay only for what you use on the service (consumption-based pricing).

For more information, see the following resources:

If an on-premises session host deployment is required, Azure Virtual Desktop for Azure Stack HCI (currently in preview) lets you deploy Azure Virtual Desktop session hosts to your on-premises Azure Stack HCI infrastructure. This configuration can help address compliance requirements for on-premises data storage. Also, you can improve performance for Azure Virtual Desktop users in areas with poor connectivity to the Azure public cloud. For more information, see Azure Virtual Desktop for Azure Stack HCI (preview).


[1] Support for Windows Server itself is not impacted. Support for Windows Server 2016 ends in January 2027. Windows Server 2019 support ends in January 2029. For more information, go to the Search Product and Services Lifecycle Information page.

[2] Microsoft 365 Apps is not supported on Windows Server 2022 because feature updates to Microsoft 365 Apps rely on changes to the underlying operating system. Office LTSC 2021 is supported for direct deployments on Windows Server 2022, because Office LTSC 2021 doesn't receive feature updates.