更改第一页上的页眉或页脚，或者文档中的任何其他页面。 重要: 分节符不同于分页符。如果想要更改页眉或页脚的页面之前已有分页符， 请删除分页符 并将其替换为分节符，如下所示。

Learn how to open and run DxDiag.exe on Windows to collect device information and troubleshoot DirectX sound and video issues.

重要: Microsoft アカウント、Windows オペレーティング システム、およびその他の Microsoft 製品には、お客様の情報をセキュリティで保護するためのパスワードが含まれています。この記事では、パスワードを忘れた場合にリセットまたは回復するために使用できるオプションをいくつか示します。

获取 Windows 操作系统的官方支持和帮助信息，以及如何使用 Windows 的指南。

Note: If it’s been fewer than 10 days since you upgraded to Windows 10, your previous version of Windows will be listed as a system file you can delete.If you need to free up drive space, you can delete it, but keep in mind that you'll be deleting your Windows.old folder, which contains files that give you the option to go back to your previous version of Windows.

Other subscription plans. Besides Microsoft 365 Family or Personal, there are other Microsoft 365 plans which include additional benefits and features designed specifically for small and mid-size businesses, enterprises, schools, or non-profits. You also get 5 GB of OneDrive online cloud storage with your free Microsoft account so you can access your files from anywhere.

有关对通过蓝牙连接的运动控制器的问题进行疑难解答的帮助信息，请参阅 Windows Mixed Reality 中的控制器。 健身追踪器 有关对通过蓝牙连接的健身追踪器的问题进行疑难解答的帮助信息，请参阅设备制造商的说明。 仍有问题？ 如果你已试用此文章中的 ...

Windows Security provides built-in security options to help protect your device from malicious software attacks. To access the features described below, tap the Windows Start button, type windows security, select it from the results, and then select Device security.

Types of info. What will be deleted. Where it's stored. Browsing history. The URLs of sites you've visited, and the dates and times of each visit. On your device (or, if sync is turned on, across your synced devices)

When you back up your files, apps, and settings in the cloud using your Microsoft account, you get 5 GB of free cloud storage and other benefits that protect your files with the latest security and make everyday tasks easier.