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

Si vous rencontrez des problèmes de son ou audio, les suggestions suivantes peuvent vous aider. Ces conseils sont affichés dans l’ordre. Commencez par le premier de la liste ; s’il ne vous permet pas de résoudre votre problème, passez au suivant.

Get troubleshooting tips if you run into problems downloading, installing, or updating Microsoft Edge.

如何激活预安装在新 Windows 10 计算机上的 Office 或使用新的产品密钥。

Obtener información sobre las opciones de recuperación en Windows. Obtén información sobre cómo restablecer tu PC, volver a una versión anterior de Windows o usar un soporte físico para volver a instalar Windows.

Play MP4 files in Windows 10 by right-clicking the file and choosing what application to open it with.

Some extensions change browser settings like your default search engine, new tab page, and other types of site data. To prevent extensions from changing the preferences you set up when you installed Microsoft Edge , the browser automatically turns off extensions that might change your preferred settings.. You can change settings for your extensions at any time.

How do I create a new account for Skype? Communities help you ask and answer questions, give feedback, and hear from experts with rich knowledge.

我的产品密钥不起作用. 如果 Office 产品密钥不起作用，或已停止工作，应与卖家联系，申请退款。 如果产品密钥是独立于软件购买的，则很可能是被盗的产品密钥，或者是以欺骗方式获得随后阻止使用的产品密钥。

Learn how to use eye control in Windows to type with an on-screen keyboard, communicate with people, and control the mouse with your eyes.