Fresh Start in Windows 10 lets you perform a clean reinstallation and update of Windows while keeping your personal data and most Windows settings intact.

Learn how to troubleshoot when the camera is not working in Windows or you see errors 0xA00F4244 or 0x200F4244.

了解如何在电脑上安装 Office 2013 或 Office for Mac 2011。

Get help with using mail, calendar, and contacts on Outlook.com.

Find out how to back up your apps, files, photos, and preferences on your Windows PC with File History and other tools.

How to use a PivotTable in Excel to calculate, summarize, and analyze your worksheet data to see hidden patterns and trends.

Windows 11, version 23H2 ; July 9, 2024—KB5040442 (OS Builds 22621.3880 and 22631.3880) June 25, 2024—KB5039302 (OS Builds 22621.3810 and 22631.3810) Preview

Get the steps for changing your home page in Microsoft Edge, Internet Explorer 11, Google Chrome, Firefox, and Safari.

Get a brief explanation about logging on as an administrator and making changes to other user accounts on your computer.

If your purchase of Office or Microsoft 365 came with a product key, you enter your product key on one of the websites listed below for your product.