即使已开启其他防火墙，开启 Microsoft Defender 防火墙也很重要。 它保护你免遭未经授权的访问。 若要打开或关闭 Microsoft Defender 防火墙，请执行以下操作：

Save disk space by creating a USB recovery drive, and use it to restore, refresh, or reset your PC.

Training: Watch and learn how to create email signatures in Outlook. Email signatures can include text, images, logos, and more.

If you get an email about unusual activity on your Microsoft account, or if you’re worried that someone else might have used your account, go to the Recent activity page.You’ll see when your Microsoft account was signed in during the last 30 days, along with any device or app-specific info.

Windows 10 と Windows 11 でユーザー アカウントを追加する方法について説明します。 アカウントを使用すれば、各ユーザーが個別のファイル、ブラウザーのお気に入り、プライベート デスクトップを持つことができます。

Find out how to submit a request for a refund for a purchase of digital Xbox content.

Find the Recycle Bin. If your desktop shows no icons at all, right-click (or press and hold) the desktop and select View.If Show desktop icons has no checkmark, click it to add one. If that doesn't work, try this:

Learn how to turn on device encryption, or standard BitLocker encryption in Windows.

O Hotmail é agora Outlook.com. Saiba como iniciar sessão para aceder ao seu Outlook.com, Hotmail, Live, ou conta de e-mail MSN.

To turn it off, switch the setting to Off.. Turning off Microsoft Defender Firewall could make your device (and network, if you have one) more vulnerable to unauthorized access.