Update for Windows 8.1 OOBE to upgrade to Windows 10

About this update

This update is for Windows 8.1 out-of-box experience (OOBE). This update lets you start an immediate free upgrade to Windows 10 during the Windows 8.1 OOBE process. This update applies only to the Windows 8.1 OOBE process. It is available only when the OOBE updates are installed.

You can find answers to frequently asked questions about the free upgrade at the Windows 10 Q&A page.

How to obtain this update

Important If you install a language pack after you install this update, you must reinstall this update. Therefore, we recommend that you install any language packs that you need before you install this update. For more information, see Add language packs to Windows.

Windows Update

This update is provided as an Optional update on Windows Update. For more information o how to run Windows Update, see How to get an update through Windows Update.

Update detail information

Prerequisites

There are no prerequisites to install this update.

Registry information

To apply this update, you do not have to make any changes to the registry.

Restart requirement

You may have to restart the computer after you apply this update.

Update replacement information

This update does not replace a previously released update.

Status

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

References

See the terminology that Microsoft uses to describe software updates.

File Information

The English (United States) version of this software update installs files that have the attributes that are listed in the following tables. The dates and times for these files are listed in Coordinated Universal Time (UTC). Be aware that dates and times for these files on your local computer are displayed in your local time and with your current daylight saving time bias. The dates and times may also change when you perform certain operations on the files.
Windows 8.1
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