Restarting your computer is required before updating can continue

This post was authored by Farzana Rahman, the group program manager of our Windows Update group.

–Steven When it comes to Windows Update, one of the most discussed topics is the disruptiveness of restarts in the course of automatic updating.

Here is what we learned from analyzing each category.

Install-at-shutdown – The majority of automatic update users (39%) are updating when they shut down their systems.

There are actually many more PCs updated by WU indirectly if you account for our Windows Software Update Server, and for those machines (or customers) that do all updates manually for any number of reasons.

Since its genesis over a decade ago, the Windows Update experience has evolved quite a bit to adapt to a changing ecosystem, especially the changing requirements around security.

It took some time to get to the point where customers trust these automatic updates, and we're proud of how far we've come.

Today Windows Update is one of the largest services on the Internet by several measures, and of course we're using Windows 8 development as a chance to improve the experience of product updates too.

Before the Internet, updates such as service packs and "patches" were impossibly hard to come by.

This three-day number is a key one that I will come back to when we talk about improvements in Windows 8.

In one week, 90% of users worldwide who need the update have successfully completed installation, including the restart, with the number of installations pretty much flattening out after that.

In this blog, I want to talk about some of the improvements we are making to the automatic updating experience in Windows 8, which will make restarts a little less annoying.

Windows Update (or WU, as we like to say within the team) currently updates over 350 million PCs running Windows 7 and over 800 million PCs across all the supported Windows platforms.

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