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.

If you're trying to add your Outlook.com account to Outlook or another mail app, you might need the POP, IMAP, or SMTP settings. You can find them below or by viewing them in your Outlook.com settings.. Outlook and Outlook.com may be able to detect your account's mailbox settings automatically, but for other non-Microsoft accounts, you may need to contact your email provider for their settings.

Find out how to install the latest driver for your printer. If you recently upgraded Windows, your printer driver might need to be reinstalled.

Find out how to change your printer's status from "offline" to "online" in Windows.

You can delete specific files or photos on Microsoft OneDrive, or you can delete entire folders and all the items in them. If you need to, you might be able to restore deleted files from the OneDrive recycle bin.

Learn how to use antivirus protection in Windows Security to protect your Windows PC against malware, viruses, and other threats.

Look in the Surface app. The easiest way to find which Surface model you have is to use the Surface app. It shows the model name of your Surface device and each Surface accessory.

加入组时，可以访问组邮箱、日历、 OneNote 笔记本和团队网站。 权限会自动处理，因此不必担心错过任何会议或对话。

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

If you’ve forgotten your Microsoft account password, learn how to do a password reset online or by using your Xbox console.