Certificate authority (CA) A certificate authority is an entity similar to a notary public.It issues digital certificates, signs certificates to verify their validity and tracks which certificates have been revoked or have expired.

A virtual private network (VPN) connection on your Windows 10 PC can help provide a more secure connection and access to your company's network and the internet—for example, when you're working in a public location such as a coffee shop, library, or airport.

This troubleshooter assists customers whose machines are not yet updated to the latest release, Windows 10 Version 1607. This update will initially be released only to a small set of targeted customers. This set will expand over time. Windows users can start the assistant from this article.

Note: If you receive a prompt asking whether to allow the app to access your camera (iOS) or to allow the app to take pictures and record video (Android). select Allow so the authenticator app can access your camera to take a picture of the QR code in the next step.If you don't allow the camera, you can still set up the authenticator app as described in Manually add an account to the app.

公式 Microsoft サポートに問い合わせるための連絡先情報を提供するウェブページです。

An array formula (one that spans multiple cells) can do calculations on rows and columns of cells where you might otherwise need to use several formulas. For example, you can count the number of characters that are contained in a range of cells, sum only numbers that meet certain conditions (such as the lowest values in a range or numbers that fall between an upper and lower boundary), and sum ...

Download the Gaming Services Repair Tool for PC using the link below. Choose your save destination and then go to that destination to open the file after the download is complete.

There are two types of rules in Outlook—server-based and client-only. Server-based rules When you're using a Microsoft Exchange Server account, some rules are server-based.These rules run on your mailbox on the Exchange mail server even when Outlook isn’t running.

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You can use any phone number that can receive text messages; it doesn’t need to be associated with your account. We won't use or give out the phone number, and the code sent to it will expire after 10 minutes.