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

ヒント: 任意の電話番号を使用してセキュリティコードをリクエストできます。. 電話番号をアカウントに関連付ける必要はありません。. 電話はスマートフォンである必要はなく、インターネットに接続されている必要もありません。テキスト メッセージを受信できる必要があります。

Bluetooth 4.0 (or later) with Low Energy (LE) support. To find out if Bluetooth LE is supported, on each PC, select the Start button, type device manager and select Device Manager from the list of results, expand Bluetooth, and then select the name of your Bluetooth radio adapter. Right-click it, select Properties, select Details, and then select Bluetooth radio supports Low Energy Central ...

An eSIM lets you connect to the Internet over a cellular data connection. With an eSIM, you don't need to get a SIM card from your mobile operator, and you can quickly switch between mobile operators and data plans.

The camera roll on your device only uploads to OneDrive - it does not sync photos both ways. That means you can delete uploaded photos and videos from your device, and the copies in OneDrive won't be affected.

Get help with Outlook for Windows, the Outlook app, Outlook.com, and more. Find training videos, how-to articles, and Outlook support content

Get security info and tips about threat prevention, detection, and troubleshooting. Including tech support scams, phishing, and malware.

Treat all email as junk unless it comes from someone in my Safe Senders or Safe Recipients lists, or from senders in my organization Select this option if you want email messages from senders that aren't defined in your Safe Senders List or Safe Recipients List or email messages from outside your organization to be treated as junk email. Email messages identified as junk email are moved to the ...

Active content is additional functionality in a file or program, such as macros, add-ins, or data connections. This article lists types of active content that can be blocked by settings in Trust Center and which, when present in a document, cause display of the Message Bar when you open your file.

If you travel often, your new locations may show as unusual activity. To travel without disruptions or alerts, we recommend using Microsoft Authenticator to sign in.. If you get an email about unusual activity and you're not sure if it's from Microsoft, you can safely sign in to your Microsoft account any time without clicking links in the email.