Contact Us - Microsoft Support
Contact Microsoft Support. Find solutions to common problems, or get help from a support agent.
Customer service phone numbers - Microsoft Support
This page provides support links for home users and support phone numbers for business users.
How to add and change an email signature in Outlook
How to create or edit your Outlook signature for email messages. Include your signature, text, images, electronic business card, and logo.
Applies To:
Outlook for Microsoft 365, Outlook 2024, Outlook 2021, Outlook 2019, Outlook 2016, Office for business, Office 365 Small Business, Outlook on the web, Outlook.com, Microsoft Office, New Outlook for Windows, Outlook on the web for Exchange Server 2016, Outlook on the web for Exchange Server 2019
Download, install, or reinstall Microsoft 365 or Office 2024 on a PC or ...
Go to Finder > Applications and open the Office app you want. In the Dock, Control+click or right-click the app icon and choose Options > Keep in Dock. Can I install Microsoft 365 on my iPhone or iPad? Yes, see Install and set up Microsoft 365 apps on an iPhone or iPad and set up email on an iOS device (iPhone or iPad).
Applies To:
Office 2024, Office 2024 for Mac, Microsoft 365 for home, Microsoft365.com, Office for business, Office 365 Small Business, Microsoft 365 admin, Office 365 operated by 21Vianet, Office 365 operated by 21Vianet - Admin, Microsoft 365 for Mac, Office 365 Germany - Enterprise, Office 365 Germany - Enterprise admin
Download and install or reinstall Office 2021, Office 2019, or Office ...
Go to Finder > Applications and open the Office app you want. In the Dock, Control+click or right-click the app icon and choose Options > Keep in Dock. Can I install Office on my iPhone or iPad? Yes, see Install and set up Office on an iPhone or iPad. You can also set up email on an iOS device (iPhone or iPad).
Applies To:
Office 2021, Office 2021 for Mac, Office 2019, Office 2016, Office 2016 for Mac
登入 - Microsoft 支援服務
歡迎使用 Microsoft 365 步驟 1：登入 步驟 2：建立並儲存 步驟 3：共用和共同作業 步驟 4：與您的團隊合作 步驟 5：設定行動 ...
Applies To:
Office 2024, Office 2021, Office 2019, Office 2016, Microsoft 365 for Windows
Changing your Xbox subscription | Xbox Support
Learn how to upgrade or downgrade your Xbox Game Pass or EA play subscription level.
輸入 Office 產品金鑰的位置 - Microsoft 支援服務
如果您購買的 Office 或 Microsoft 365 隨附產品金鑰，您可以在下方列出適用於您產品的網站上輸入產品金鑰。 輸入金鑰之後，您可以下載並安裝 Office，也可以為您的 Microsoft 365 訂閱續約。
Applies To:
Office 2024, Office 2024 for Mac, Office 2021, Office 2021 for Mac, Office 2019, Office 2016, Microsoft 365 for home, Microsoft365.com
Xbox subscription cancellations and refunds | Xbox Support
Find out how to manage your Xbox subscriptions to request a refund or cancel a recurring payment.
Activate Microsoft perpetual products using the Product Activation ...
Microsoft is modernizing the activation experience for perpetual licenses. Beginning December 3, 2025, the traditional telephone-based product activation automation process has been moved from telephone to online. Customers will instead use the Product Activation Portal: Product Activation Portal The new digital workflow provides a more secure, reliable, and user‑friendly activation ...