The easiest way to find which Surface model you have is to use the Surface app. It shows the model name of your Surface device and each Surface accessory. Note: When signed in to the Surface app, you can see information for other Surface devices that you've also signed in to. Open the Surface app.

Export Word document as PDF. Exporting your document as a PDF is a convenient way create a shareable copy of your document while preserving its formatting. Here's how do it in Word Online. At the top of your screen, select File. In the displayed list of options, select Export.

Signing certificate and certificate authority. Digital signature assurances. What is a digital signature? A digital signature is an electronic, encrypted, stamp of authentication on digital information such as email messages, macros, or electronic documents. A signature confirms that the information originated from the signer and has not been ...

If you feel like you’ve been the target of a technical support scam, you can help Microsoft stop cybercriminals by reporting it. Learn more about avoiding technical support scams.

From the Overview page, select Office apps and on that page, find the Microsoft 365 product you want to install and select Install. To install Microsoft 365 in a different language, or to install the 64-bit version, use the dropdown to find more options.

Get to know your way around Windows 11, from where to search to how to stay organized. Watch the video and read tips about new features.

在开始之前，请确保电脑或 Mac 满足 系统要求 。. 如果你已兑换产品密钥，只需重新安装应用，或者知道你已通过工作或学校分配了许可证，则可以跳到登录部分 ，下载并安装 Microsoft 365 或 Office 。. 但是，如果是 首次 安装 Microsoft 365 或 Office，可能需要先执行 ...

依照本頁面的步驟變更您用來登入 Microsoft 帳戶的電子郵件地址或電話號碼 (也稱為您的帳戶別名或使用者名稱)。. 擔心您的授權嗎？. 如果您變更帳號別名或移除別名，然後新增別名，則連結到您 Microsoft 帳戶的所有授權都會保留在您的帳戶中，別擔心。. 警告 ...

A digital ID enables you to send digitally signed messages using Microsoft Outlook. A digital ID—also known as a digital certificate—helps prove your identity and helps prevent message tampering to protect the authenticity of an email message. You also can encrypt messages for greater privacy.

How to open Microsoft Store on Windows. Select Start then enter Microsoft Store. Select it to open the app. If Microsoft Store won't launch, get more info at Microsoft Store does not launch. Select the Microsoft Store icon on the taskbar or select the search box and type "Microsoft Store."