An upgrade moves your PC from a previous version of Windows—such as Windows 7 or Windows 8.1—to Windows 10. An upgrade can take place on your existing device, though Microsoft recommends using Windows 10 on a new PC to take advantage of the latest features and security improvements.

開始する前に. Windows 11 をインストールするデバイスが、最小システム要件 を満たしていることを確認します。 デバイスで Windows 10 を実行中の場合、Windows PC 正常性チェック アプリ を使用して、最小システム要件を確認することをお勧めします。 要件を満たしていないデバイスに Windows 11 を ...

Download the offline installer for Internet Explorer 11 in your preferred language and system from Microsoft Support.

Optimizing your drives can help your PC run smoother and boot up faster. To optimize them: Select the search bar on the taskbar and enter defrag.

In Outlook, you have the option to: Attach a file | Upload a locally saved file to your OneDrive | Insert a picture into the body of a message | Attach an email item | Solve problems with attachments. Attach a file to an email message in new Outlook. New Outlook keeps track of the files you have worked on recently and suggests them whenever you decide you want to attach a file to an email message.

Important: The following steps apply only to devices currently running an activated copy of Windows 11 Home.If you’re not activated, we recommend you activate Windows 11 Home first. For more info, see Activate Windows.

Here's an example of how to use VLOOKUP. =VLOOKUP(B2,C2:E7,3,TRUE) In this example, B2 is the first argument—an element of data that the function needs to work.For VLOOKUP, this first argument is the value that you want to find.

ime 支援稱為 ime 工具列的 ui，提供快速調用特定 ime 函數的替代方法。 ime 工具列是語言欄續約的 ui。 若要開啟 ime 工具列，請以滑鼠右鍵按一下通知區域中的 ime 模式圖示，然後選取 [ 顯示/隱藏 ime 工具列。

Important: Microsoft accounts, the Windows operating system, and other Microsoft products include passwords to help secure your information.This article provides some options that you can use to reset or recover your password if you forget it. Be aware that, if these options don’t work, Microsoft support can't help you retrieve or circumvent a lost or forgotten password.

Using Authenticator as a way to sign in. If you have turned on passwordless, two-step, or multi-factor authentication for your account, use the following steps to sign-in: