Hotmail 现在是 Outlook.com。 了解如何登录以访问 Outlook.com、Hotmail、Live 或 MSN 电子邮件帐户。

Help to fix install errors for Office, such as "can’t install Office", "something went wrong" or situations where install hangs or activation fails.

Learn how to troubleshoot Windows activation errors. Browse common activation errors and learn what you can do to fix them.

Learn how to set up and use the Outlook Mobile app for multi-factor authentication.

Troubleshoot problems you might be having with your mouse or keyboard, or other wireless device in Windows.

Using Authenticator as a way to sign in. If you have turned on passwordless, two-step, or multi-factor authentication for your account, use the following steps to sign-in:

Microsoft Edge has an improved way to copy and paste paste web URLs from the address bar into your content. This feature copies and pastes a URL as a hyperlinked title instead of as a web address.

Here are some solutions to common problems with the new Microsoft Edge . If Microsoft Edge keeps crashing. If you can't open Microsoft Edge, or if it opens briefly and then closes, or if you’re unable to open specific webpages, here are some things you can try.

Windows Explorer is now called File Explorer in Windows 10. By pressing submit, your feedback will be used to improve Microsoft products and services.

Learn about the UNIQUE function, which returns a list of unique values in a list or range. UNIQUE is in a class of functions called dynamic arrays.