If your organization is running Windows 10, April 10, 2018 marks an important milestone.

For Windows 10 version 1607 (the so-called Anniversary Update), that date marks the official end-of-service date. To continue receiving monthly security and quality updates, you need to install a newer feature update from the Semi-Annual Channel.

If that abbreviated lifecycle seems like a major change from previous versions, welcome to the “Windows as a service” era.

 Microsoft has a well-established support lifecycle for its software products. As I’ve noted before, it’s basically an agreement that the company makes with everyone who purchases a license to use its core products, Windows (desktop and server) and Office.

That assurance of support is especially important for business customers, who tend to be conservative in their approach to upgrades.

In this guide, Ed Bott shows you which privacy settings help you create the right balance of privacy and convenience in Windows 10.

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That 10-year support lifecycle is rapidly fading away, as Microsoft moves to its “Windows as a service” and Office 365 subscription models. For a few more years, software sold under the Fixed Lifecycle Policy is still alive and kicking. But it’s rapidly being supplanted by products like the Windows 10 Semi-Annual Channel and Office 365 that follow the Modern Lifecycle Policy. (For details on the differences, see the Microsoft Lifecycle Policy home page.)

long list of Microsoft products have end-of-support dates in 2018. That comes on the heels of a similarly long list of products whose support ended in 2017, including Windows Vista and Office 2007.

Here’s the rundown on commitments for currently supported client versions of Windows and Office, starting with the newest member of the family.

How long will Windows 10 be supported?

We might need a whiteboard for this one because the story is complicated.

In the run-up to the release of Windows 10, many wondered whether Microsoft would take the opportunity to change its established 10-year support lifecycle. The answer, as announced with the release of the new operating system in July 2015, is no. The Windows 10 support lifecycle has a five-year mainstream support phase that began on July 29, 2015, and a second five-year extended support phase that begins in 2020 and extends until October 2025.

A note to that policy qualifies the support commitment to devices where the OEM continues to support Windows 10 on that device. And that’s where things become complicated.

Windows 10 feature updates (the new name for what used to be full-version upgrades) are delivered via Windows Update automatically. Microsoft released the first major update, version 1511, in November 2015; the second feature update, version 1607 (the Anniversary Update) was released in summer 2016; versions 1703 and 1709 were released in April and October 2017, respectively.

These updates are required for ongoing servicing, and Microsoft supports each feature update for 18 months. That period ended for the initial release of Windows 10 on May 9, 2017. Support for the Anniversary Update ended on April 10, 2018.

For an up-to-date list of end-of-service dates for each Windows 10 version, see the Windows lifecycle fact sheet. (Spoiler: Version 1703 servicing ends on Oct. 9, 2018, and the end date for version 1709 is April 9, 2018.)

Microsoft has made one exception to these dates for customers running Enterprise and Education editions of Windows 10 versions through 1709. For those customers, the end-of-service date is pushed back an additional six months, which means the end date for Windows 10 version 1607 is October 9, 2018.

But what if your device is incapable of installing a new feature update? That unfortunate situation actually happened to owners of three- and four-year-old devices built using