Lees meer informatie over het installeren, opnieuw installeren of activeren van Microsoft 365 of Office 2019 op een pc of Mac.

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

如果你使用的是 Windows 11，并在使用 Microsoft Store 中的应用时遇到问题，请考虑这些更新和修复程序。 首先，登录到你的 Microsoft 帐户。 接下来，按照显示的顺序实施这些可能的解决方案。

获取有关 Windows 安全的帮助; 在 Microsoft Edge 中查看和删除浏览器历史记录; 删除和管理 Cookie; 重新安装 Windows 时安全移除有价值的内容

In Microsoft Forms, you can send forms and quizzes to students, parents, and colleagues to collect form responses.

The dark theme changes the default bright background color in the new Microsoft Edge to a darker color, which is easier on the eyes in low-light environments or if you prefer less bright interfaces. Here's how to activate dark mode: Go to Settings and more > Settings .

Learn more about the error messages you might receive when you try to upload files on the OneDrive website.

As a Microsoft 365 subscriber, you regularly get new and improved Microsoft 365 features. Take a look below to see what's available to you today.

Learn how to download files from the web, change your default download location, and find files you've downloaded on your PC using Internet Explorer.

Training: Get productive quickly with our Outlook Quick Start. Learn how to create and send email, and use @mentions to get someone's attention.