If you can't sign into your Microsoft account, most issues can be identified by our sign-in helper tool. The tool will ask you to enter the email address or mobile phone number you're trying to sign in with and check the details you provide. If we detect a problem with your account, we'll tell you what you need to do to solve the problem.

打开“电子表格比较”。. 在左下窗格中，选择要包括在工作簿比较中的选项，例如公式、单元格格式或宏。. 或者，只需单击“ 全选 ”。. 在“ 开始 ”选项卡上，选择“ 比较文件 ”。. 在" 比较文件 "对话框中的" 比较 "行中， 工作簿的早期版本。. 除了您的 ...

準備安裝了嗎？ 開始之前，請確定您的PC或Mac符合 系統需求。 如果您已兌換產品密鑰、只是重新安裝應用程式，或是知道您已透過公司或學校指派授權，您可以跳到登入以 下載並安裝 Microsoft 365 或 Office 章節。 不過，如果這是您 第一次 安裝 Microsoft 365或 Office，您可能需要先執行一些步驟。

Note: Recovery drives created and used on machines with the April 9, 2024 security update and the revocation policy applied may be impacted.For more, see KB5025885: How to manage the Windows Boot Manager revocations for Secure Boot changes associated with CVE-2023-24932.

Step 1: Start an Office app, like Word, Project, or Visio, depending on your purchase. Step 2: In the Sign in to set up Office window, select I don't want to sign in or create an account (it's a small link at the bottom of the window). Step 3: Enter your Office product key, without hyphens. If you don't have your key, see get your Workplace ...

Look up your username using your security contact phone number or email address. Request a security code to be sent to the phone number or email you used. Enter the code and select Next. A phone number or other email address may be used as sign-in security information for more than one account. If the hints don’t help, go to Step 2: Check ...

Select Start > Settings > System > Sound. In Input, select the microphone that you want to test. In Input settings, look at Input volume while speaking into the microphone. If the bar moves while you speak, your microphone is working properly. If don't see the bar moving, go to Test your microphone and select Start test.

Create Windows 11 installation media. On the Windows 11 software download page , select Create tool now and follow the instructions to install Windows 11. Warning: Microsoft recommends against installing Windows 11 on a device that does not meet the Windows 11 minimum system requirements.

如果在支持终止后继续使用 Windows XP，你的计算机仍然可以工作，但会变得更容易面临安全风险和遭到病毒攻击。. Internet Explorer 8 也不再受支持，因此，如果你的 Windows XP 电脑连接到 Internet 并且你使用 Internet Explorer 8 进行网上冲浪，则你可能使电脑暴露在更多 ...

In the OneDrive app, press and hold, or tap the three dots next to, the file or folder that you want available for offline reading, then tap Make Available Offline . Files or folders marked for offline reading have the Available Offline icon in the List view. Tap the file listing anytime to open the file for reading. Tips: Once you mark a file ...