The Microsoft Authenticator app helps you sign into your accounts when you're using two-step verification.

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.

Get help with Skype for Business. Skype for Business 2016 Training. Video: What is Skype for Business? Video: Download and install Skype for Business (video)

In Office 2021, you'll find new co-authoring features, inking tools, data types, functions, translation and editing tools, motion graphics, ease-of-use features, and so much more!

了解适用于 Windows 的“照片”应用如何让你查看电脑中的照片和视频以及 OneDrive 中的照片和视频，并按日期、相册或文件夹进行整理。

In Windows, having a camera and microphone as part of your device lets you make Teams video calls, take pictures, record videos, and more. Many apps and services request and use the camera or microphone, and Windows settings give you control over which apps can use your camera or microphone.

Learn what to do if you receive a message in Mail or Calendar for Windows 10 that your account settings are out of date.

Learn how to reset or move OneDrive by unlinking and re-linking your PC.

Explore subscription benefits, browse training courses, learn how to secure your device, and more.

Se não for possível entrar na conta de email do Outlook.com, Hotmail, Live ou MSN, ou se não souber como entrar ou sair, confira algumas soluções.