In the list next to Personalize your background, select Picture, Solid color, Slideshow, or Windows Spotlight (to see a new image from around the world every day).

注: ワイヤレス ディスプレイ アプリは、Windows 11 バージョン 22H2 以降を実行しているデバイスで使用できます。以前のバージョンの Windows を実行している場合は、タスク バーの検索ボックスに 「connect」と入力し、結果の一覧で [接続 ] を選択して、Connect アプリを起動します。

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

Important: you should limit the number of administrators on your Windows device because administrators have complete control over the system.Administrators can change settings, install software, and access all files. If too many people have this level of access, it could lead to security risks like malware installation or unwanted changes to your system.

Tip: If you don't see the SharePoint app under All apps, use the Search box near the top of the window to search for SharePoint. For more information, see Where to sign in to Microsoft 365 . Note: Images in this Quick Start depict the Modern experience unless otherwise indicated.

You don’t have to worry that you'll lose your work because of your battery draining because Windows automatically saves all your work and turns off the PC if the battery is too low. Use Sleep when you’re going to be away from your PC for just a little while—like when you’re taking a coffee break.

Because this mode is streamlined for tighter security, the Virus & threat protection area has fewer options. But don't worry—the built-in security of this mode automatically prevents viruses and other threats from running on your device, and you'll receive security updates automatically. For more info, see Windows 10 or 11 in S mode FAQ.

How does multifactor authentication work? Let's say you're going to sign into your Microsoft account or work or school account, and you enter your username and password.If that's all you need then anybody who knows your username and password can sign in as you from anywhere in the world!

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。

Open User Accounts by clicking the Start button , clicking Control Panel, clicking User Accounts and Family Safety, clicking User Accounts, and then clicking Manage another account .. If you're prompted for an administrator password or confirmation, type the password or provide confirmation.