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

Discover how to use Microsoft Phone Link to connect your Android or iPhone to your PC for seamless access to notifications, calls, and apps.

Your Microsoft account dashboard is where you can manage your personal information and security settings, keep tabs on your subscriptions and order history, and manage your payment and billing options.

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

Questions and answers about artificial intelligence (AI), and how it's used in Microsoft products such as Microsoft Copilot.

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.

Set up the Microsoft Authenticator app from the Security info page. Depending on your organization’s settings, you might be able to use an authentication app as one of your security info methods.

Learn how to activate Windows using a product key or digital license, check your activation status, and link your Microsoft account.

Alternatively, you can install any website by going to the top corner of the browser and select Settings and more … > Apps > Install this site as an app.

Learn how to check for, download, and install KB 2919355, an update for Windows 8.1 and Windows RT 8.1.