Tip: Most of what web protection checks happens in the background, when apps on your device connect to servers or services on the internet as part of their normal business.

Microsoft prioritizes account security and works to prevent people from signing in without your permission. When we notice a sign-in attempt from a new location or device, we help protect the account by sending you an email message and an SMS alert. If your phone number or email changes, it's important to promptly update the security contact info on the Security basics page so we can work with ...

A phishing email is an email that appears legitimate but is actually an attempt to get your personal information or steal your money. Some deceptive emails appear to be from a safe sender but, in fact, have a "spoofed" source address to fool you. Here are some ways to deal with phishing and spoofing scams in Outlook.com. Spoof intelligence in Exchange Online Protection helps prevent phishing ...

To report an email as phishing or junk: Select the email you want to report. Tap ⋮ at the top right of the screen. Select Report Junk from the dropdown menu. Select Junk, Phishing, or Block Sender as needed.

Support for Windows 10, Office 2016 and Office 2019 has ended on October 14, 2025. Learn more about your options for Windows 10 or for Office.

Learn more about the advanced security features for Outlook.com that come with an Office 365 Home or Office 365 Personal subscription.

You can change the UAC behavior by opening the Control Panel > System and Security > Change User Account Control settings. Move the slider to your desired level of notification and select OK to save your changes.

Help articles about the Clipchamp web and embedded video player, webcam and screen recorder, and the Microsoft 365 video homepage. Available for work & edu subscribers.

The Basics of Search Returning search results is no easy feat, and involves complex, near-instantaneous algorithmic calculations. A search for something as simple as “cat” could yield over 55 million results. So how do we choose which results to show first? We start by crawling the web and building an index of available web pages. Then we use algorithms to rank and optimize that content so ...

从桌面版 Outlook 连接电子邮件时出现问题？ 请按照以下步骤操作，使 Outlook 诊断并修复 Outlook 邮件配置文件中可能导致此问题的错误。 修复 Outlook 中的配置文件 在 Outlook 中，选择“ 文件 ”。 选择“ 帐户设置 ”>“ 帐户设置 ”。 在“ 电子邮件 ”选项卡上选择你的帐户（配置文件），然后选择 ...