如何在 Outlook 中添加和更改电子邮件签名 | Microsoft Support
摘要 Email 签名在您的业务通信中创建专业一致性，并确保收件人在每封邮件中都有您的联系信息。 在 Outlook 中，可以针对内部与外部、个人与业务) (不同目的设置多个签名，并选择是否将它们自动包含在新电子邮件、答复或转发中。 签名可以包含文本、链接、图片和图像 (如手写签名或徽标 ...
Applies To:
Outlook for Microsoft 365, Outlook 2024, Outlook 2021, Office 365 Small Business, Outlook.com, New Outlook for Windows, Outlook on the web for Exchange Server 2016, Outlook on the web for Exchange Server 2019
Digital signatures and certificates | Microsoft Support
Certificate authority (CA) A certificate authority is an entity similar to a notary public. It issues digital certificates, signs certificates to verify their validity and tracks which certificates have been revoked or have expired. Top of Page Digital signature assurances The following terms and definitions show what assurances are provided by digital signatures. Authenticity The signer is ...
Applies To:
Excel for Microsoft 365, Word for Microsoft 365, PowerPoint for Microsoft 365, Access for Microsoft 365, Excel 2024, PowerPoint 2024, Access 2024, Excel 2021, Word 2021, PowerPoint 2021, Access 2021, Visio Professional 2021, Visio Standard 2021, Excel 2019, Word 2019, PowerPoint 2019, Access 2019, Visio Professional 2019, Visio Standard 2019, Excel 2016, Word 2016, PowerPoint 2016, Access 2016, Visio Professional 2016, Visio Standard 2016
Update your Microsoft account if you’re moving to a new country or ...
Find out how to update your Microsoft account if you’re moving to a new country or region and about the impact of changing regions.
如何在 Outlook 中新增和變更電子郵件簽名 | Microsoft Support
摘要 Email 簽名可為您的商務通訊建立專業一致性，並確保收件者在每封郵件中都有您的聯絡資訊。 在 Outlook 中，您可以針對不同目的設定多個簽名 (內部與外部、個人與公司) ，並選擇是否要自動將其包含在新電子郵件、回覆或轉寄中。 您的簽名可以包含文字、連結、圖片和影像 (例如手寫簽名或 ...
Applies To:
Outlook for Microsoft 365, Outlook 2024, Outlook 2021, Office 365 Small Business, Outlook.com, New Outlook for Windows, Outlook on the web for Exchange Server 2016, Outlook on the web for Exchange Server 2019
Microsoft Support
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Microsoft Support
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Obtain a digital certificate and create a digital signature
About digital signatures and certificates in Office, and buying a digital certificate from a certificate authority or create your own.
Applies To:
Excel for Microsoft 365, Word for Microsoft 365, Outlook for Microsoft 365, PowerPoint for Microsoft 365, Word 2024, Word 2021, Word 2019, Excel 2016, Word 2016, Outlook 2016, PowerPoint 2016, Office 2016
Supported languages for Microsoft Copilot
This article applies to: All Microsoft Copilot experiences — personal accounts (Personal, Family, Premium, Pro), work or school accounts, and free Copilot Chat. Last updated: September 2026 Microsoft Copilot is available globally in over 170 markets around the world. There are a few exceptions for regions like China (excluding Hong Kong SAR) and embargoed markets, where Copilot is either not ...
Activate Windows | Microsoft Support
Learn how to activate Windows using a product key or digital license, check your activation status, and link your Microsoft account.
Find your Windows product key | Microsoft Support
Learn how to find a Windows product key for activation, and when you'll use a digital license instead.
Applies To:
Microsoft account dashboard