For information about Windows update terminology, see the article about the types of Windows updates and the monthly quality update types. Note Follow @WindowsUpdate to find out when new content is published to the Windows release health dashboard.

Windows Security provides built-in security options to help protect your device from malicious software attacks. To access the features described below, tap the Windows Start button, type windows security, select it from the results, and then select Device security.

Microsoft Rewards offers and redemption catalogs vary across regions. The following is a list of countries/regions in which Microsoft Rewards is currently available:

Windows 8.1 Update and Windows RT 8.1 Update (also known as KB 2919355) include improvements that make your favorite apps and settings easier to find and use, provide more familiar mouse and keyboard options, and update security and performance.Here’s what you need to know about installing this important update. Check to see if it’s already installed

After you've signed up for Microsoft 365, you and your employees can install your Office apps. From the admin center, select Office software.. Choose a language, and then select Install.. When prompted, select Run.. Select Yes to allow the app to make changes to your device.. The installation may take several minutes, depending on your Internet speed.

Press and hold (or right-click) the MP4 file you want to play, select Open with, and then choose your preferred file player from the list of applications.

Lithium-ion batteries wear out over time, which can result in a battery not holding a charge for as long as it did when it was new. Keeping the battery charged to 100% all the time can cause it to deteriorate faster.

Why some files won't open in Internet Explorer. Internet Explorer uses add-ons such as Adobe Reader to view some files in the browser. If a file that needs an add-on won't open, you might have an older version of the add-on, which needs to be updated.

Устранение неполадок с аксессуарами Bluetooth. Если вы можете включить Bluetooth, но у вас возникают проблемы со связыванием или использованием аксессуара Bluetooth, см. следующие действия, которые помогут вам устранить ...

注: Office Home and Student などの Microsoft 365 スイート製品をインストールした場合、または Microsoft 365 サブスクリプションをお持ちの場合は、そのスイート製品名を検索します。 Microsoft 365 や Word などの単体の Visio アプリケーションを購入した場合は、そのアプリケーション名を検索します。