Get Microsoft billing support. Find help with Microsoft Store purchases, subscriptions, refunds, payment options, and checking your order history.

Note: Offers vary by country.Be sure to redeem your rewards points in the same region you signed up in. Do not use a VPN while trying to redeem points. When redeeming points, use a mobile or landline phone number for authentication and not a VoIP phone number.

使用文件共享、云服务或其他解决方案发送大型文件，以便在 Outlook 中解决文件大小限制。

While you’re playing a game, press the Windows logo key + G to open Game Bar.

Training: Learn how to get up and productive quickly with this Microsoft Teams Quick Start. Sign in to Teams, select Teams and Channels, reply to conversation threads, @mention someone, use emojis and stickers, and ask T-Bot questions.

此疑難排解員可協助尚未將電腦更新至 Windows 10 1607 最新版本的客戶。 此更新一開始只會針對少數目標客戶而發行。 這個組合會隨著時間擴展。 Windows 使用者可以透過本文啟動小幫手。

Important: If your device is out of support, it is no longer receiving security updates from Microsoft and may become more vulnerable to security risks and viruses.Therefore, we strongly recommend that you update to the latest version of Windows. Each version of Windows is supported for 18 months.

Note: Use these steps for Windows programs.If you're having problems with an app you got from Microsoft Store, go to Fix problems with apps from Microsoft Store.

Learn how to download, install, and configure Language Accessory Packs for Microsoft 365 for additional display, help, and proofing tools.

你可以在 OneDrive 上存储超过300的文件类型。 它们是安全的，可在浏览器、移动应用、Mac 和 Pc 上使用。 无论是否拥有 Office，您都可以与其他人在 Office 文档中进行编辑和共同创作。