Learn to add email accounts such as Gmail and Yahoo! Mail to your Outlook.com app so you can view all of your mail from one location.

Add an email address or phone number to your Microsoft account and keep your current contacts, online storage, subscriptions, and account settings.

Create a reusable template by saving a PowerPoint file (.pptx or .ppt) as a PowerPoint template (.potx or .pot).

Internet Explorer 11 support ended on June 15, 2022. We recommend you use Microsoft Edge for a faster, more secure and more modern web browsing experience.

更改第一页上的页眉或页脚，或者文档中的任何其他页面。

An icon is added to the right of your Address bar, letting you sign in and customize the extension. To change your My Apps portal using the extension

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Before you begin filling out the form. The steps below will help guide you when filling out the account recovery form. It can be a lengthy process as it's designed to ask questions about your account that only you can answer.

Describes how to use the clean boot process to troubleshoot a problem in Windows 8.1, Windows 8, Windows 7, or Windows Vista.

Training: How to save and upload files and folders to OneDrive in your browser or on your desktop.