Community Manager

This post was authored by Bernardo Caldas, General Manager for Windows, and Jared Spataro, General Manager for Office.

Update (Sept. 6, 2018): Office 365 ProPlus will continue to be supported on Windows 8.1 through January 2023, which is the end of support date for Windows 8.1. Office 365 ProPlus will also continue to be supported on Windows Server 2016 until October 2025. In addition, all currently supported feature updates of Windows 10 Enterprise and Education editions (versions 1607, 1703, 1709, and 1803) will be supported for 30 months from their original release date. Please see Jared Spataro's blog post on Helping customers shift to a modern desktop for more information, and see the Windows lifecycle fact sheet for current end of service dates.

Delivering a secure and productive modern workplace is a top priority for many of our commercial customers, and we’re committed to help. Last July, we took a big step forward in this journey with the introduction of Microsoft 365, a new product suite that brings together Office 365, Windows 10, and Enterprise Mobility + Security.  Many customers are in the process of moving to one or more of these products, and they’ve asked us to clarify a few key points to help them with their upgrades.  Today – two years before the end of extended support for Windows 7 and Office 2010 (January and October 2020, respectively) – we’re announcing servicing extensions for Windows 10, changes to the Office 365 ProPlus system requirements, and new details on the next perpetual release of Office and Long-Term Servicing Channel (LTSC) release of Windows.

Servicing extensions for Windows 10

Windows 10 is being adopted rapidly by organizations of all sizes, and as customers deploy the product they are implementing a modern servicing methodology we refer to as Windows as a service.

Many customers – including MARS, Independence Blue Cross, and Accenture – have made significant progress in moving to Windows as a Service, but some have requested an extension to the standard 18 months of support for Windows 10 releases.  To help these customers, we are announcing an additional six months of servicing for the Enterprise and Education editions of Windows 10, versions 1607, 1703, and 1709. (Additional servicing for Windows 10, version 1511 was announced in November.)  This extension will be offered via normal channels.  The chart below outlines the impact of these extensions for each of the last four Windows 10 releases.


Release date

End of support

End of additional servicing for Enterprise, Education

Windows 10, version 1511

November 10, 2015

October 10, 2017

April 10, 2018

Windows 10, version 1607

August 2, 2016

April 10, 2018

October 9, 2018

Windows 10, version 1703

April 5, 2017

October 9, 2018

April 9, 2019

Windows 10, version 1709

October 17, 2017

April 9, 2019

October 8, 2019

We will also offer additional paid servicing options for Windows 10 Enterprise and Education releases starting with Windows 10 version 1607. For more information, contact your Microsoft account team.

Updates on the Office 365 ProPlus system requirements

Office 365 ProPlus delivers cloud-connected and always up-to-date versions of the Office desktop apps. To ensure that customers get the most secure and efficiently managed experience from ProPlus and Windows 10 together, we are providing updates on the Windows system requirements for Office 365 ProPlus.

  • To clarify our current support practices for ProPlus running on Windows 10, ProPlus will not be supported on Windows 10 Semi-Annual Channel (SAC) versions that are no longer being serviced.
  • Effective January 14, 2020, ProPlus will no longer be supported on the following versions of Windows. This will ensure that both Office and Windows receive regular, coordinated updates to provide the most secure environment with the latest capabilities.
    • Any Windows 10 LTSC release
    • Windows Server 2016 and older
    • Windows 8.1 and older

We recognize that some of our customers deliver Office to their users via Remote Desktop and VDI. Later this year, Microsoft will deliver new Remote Desktop and desktop virtualization capabilities within the SAC release cadence of Windows 10 Enterprise and Windows Server. Join the Windows Server Insider program to get early access to these capabilities.

To learn more about these updates, visit the support page.  And to ask the experts, visit the Office Apps Tech Community page.

New details on the next perpetual release of Office and LTSC release of Windows 10

We recognize that some customers aren’t ready to move to the cloud and will instead choose to deploy on-premises or hybrid architectures.  For those customers, we’re announcing new details on the next perpetual release of Office and LTSC release of Windows 10.

Office 2019

Last year at Ignite, we announced Office 2019 – the next perpetual version of Office that includes apps (including Word, Excel, PowerPoint, and Outlook, and Skype for Business) and servers (including Exchange, SharePoint, and Skype for Business). Today we’re pleased to share the following updates:

  • Office 2019 will ship in H2 of 2018. Previews of the new apps and servers will start shipping in the second quarter of 2018.
  • Office 2019 apps will be supported on:
    • Any supported Windows 10 SAC release
    • Windows 10 Enterprise LTSC 2019
    • The next LTSC release of Windows Server
  • The Office 2019 client apps will be released with Click-to-Run installation technology only. We will not provide MSI as a deployment methodology for Office 2019 clients. We will continue to provide MSI for Office Server products.

Modern software not only provides new features to help people do their best work, but also new, more efficient manageability solutions and more comprehensive approaches to security. Software that is more than a decade old, and hasn’t benefited from this innovation, is difficult to secure and inherently less productive. As the pace of change accelerates, it has become imperative to move our software to a more modern cadence. In the past, perpetual versions of Office were released under the Microsoft Fixed Lifecycle Policy, with a term of 5 years of standard support and 5 years of extended support. Office 2019 will ship under a separate term with a reduced extended support period:

  • Microsoft will provide 5 years of mainstream support and approximately 2 years of extended support for Office 2019 apps and servers. This is an exception to our Fixed Lifecycle Policy to align with the support period for Office 2016. Extended support will end 10/14/2025.
  • There is no change to the support term for existing versions of Office.

Windows 10 Enterprise LTSC 2018

The next LTSC release, Windows 10 Enterprise LTSC 2018, will be available in the fall of 2018.  In keeping with the previous Long-Term Servicing Channel releases, this release will have the same features as the Windows 10 Semi-Annual Channel release made available at the same time – with the usual exceptions (including apps that are often updated with additional functionality, including the in-box apps, Microsoft Edge, and Cortana).  This new release will also add support for the latest generations of processors, per the standard silicon support policy.  This release of Windows 10 Enterprise LTSC will be released under our fixed lifecycle policy with a term of 5 years of mainstream support and 5 years of extended support.

At Microsoft, we’re committed to helping our commercial customers deliver a secure and productive modern workplace – and that means helping them get current and stay current on Office and Windows.  Many customers are already in the process of planning their upgrades, and today’s announcements address feedback we’ve heard from them over the last few months.  Servicing extensions for Windows 10 will help customers who need a little extra time to implement Windows as a service; changes to the Office 365 ProPlus system requirements provide clarity for new ProPlus deployments; and Office 2019 and Windows 10 Enterprise LTSC 2018 will give customers who aren’t yet ready to move to the cloud a valuable set of new security and productivity features.



Occasional Visitor


Does that mean that Windows 10 Enterprise LTSC 2018 will be supported on “general-purpose devices” (running office applications)as this scenario was not qualified to be used with Windows 10 LTSB 2016 before?


Thank you for clarification.

Occasional Visitor



Will the extended 6 months also apply to future Windows 10 releases, e.g. 1803 and 1809?

Frequent Visitor


when will the 1803 Version be available?

Is 5 th of April right?

Senior Member

I'd like Microsoft to reconsider Office support on LTSB 2016 (v1607).  I know it was always Microsoft's stance that Office doesn't belong on LTSB, but you've clearly changed that point of view for LTSC 2018, and LTSB 2016 has proven extremely trouble-free compared to semi-annual channel.  


I know it's probably impractical to expect ongoing Office 365 support on a 10-year platform, but please consider extending Office 2019 support to LTSB 2016 machines.

Occasional Visitor

don't understand  I don't need all the bells & whistles I only have need for correspondence and journal/ won't (the truth, please) won't Evernote replace my needs?


Not applicable


About this part:

The Office 2019 client apps will be released with Click-to-Run installation technology only.

What are the implications of this change for companies that are using WSUS to deploy updates?

Senior Member



so does this mean that Office 365 ProPlus is not supported on Server 2019?

Only Office 2019?


As for my info, MS now gives support until 2025 for Office365 ProPlus on RDSH2016 - so why it should not be supported on RDSH2019?


Thanks for your help




New Contributor



how about support for Office 2016 und Windows Server 2019?

Is this supported?




Occasional Contributor

Hi, this is an bad decision, in a recent survey over 50% of schools chose LTSB/C images due to the bloat that Microsoft ships with the base image.


This decision will no doubt be reversed I'm sure, but really what are you thinking? Have you even done any telemetry on the installs? Talked to educational customers?


EDIT: see network managers discussion here: http://www.edugeek.net/forums/windows-10/204821-w10-edu-vs-w10-ent-ltsc.html

Not applicable

@Gareth SellwoodHi. Can I please have a link to that recent survey of yours?

Occasional Visitor

Until when is O365 PP supported on Server 2012 R2? Support for O365 PP on Windows 8.1 has been Extended to Jan 2023 (source: https://www.microsoft.com/en-us/microsoft-365/blog/2018/09/06/helping-customers-shift-to-a-modern-de... but in this Information (source: https://techcommunity.microsoft.com/t5/Office-365/The-little-un-known-Secrets-of-using-Office-365-Pr...) the support for O365 PP on Server 2012 R2 still ends at  Jan 2020, which is a bit confusing. Who could clarify this?

Occasional Contributor

Regarding the source of LTSC install numbers check out the Edugeek forum. Many people are recommending LTSC due to its lack of Bloated apps such as Xbox and "Wallet" and many other default app installs on the start menu. See here for source discussion: http://www.edugeek.net/forums/windows-10/204821-w10-edu-vs-w10-ent-ltsc.html

Occasional Visitor

This article more that 1.5 years old.  We are moving on ...  MS needs to keep us updated more frequently. 

      eg. the stated Win10 Ent 2018 LTSC was actually released as Win10 Ent 2019 LTSC.


How about redoing the article for today, September 2019?