To open Action Center, do any of the following: On the right end of the taskbar, select the Action Center icon.

You can use RTF when you send messages inside an organization that uses Microsoft Exchange, but we recommend that you use the HTML format. In fact, when you send an RTF message to someone outside your organization, Outlook automatically converts it to HTML, so the message keeps its formatting and its attachments.

Important: If the individual you want to transfer the subscription to hasn't purchased it yet and they're also currently sharing your subscription, (for example, they're a member of your Microsoft Family), make sure you stop sharing with them before they activate the new subscription.

查找 Windows 7 或 Windows 8.1 的产品密钥. 卸载或重新安装 Windows 7 或 Windows 8.1 时，通常需要产品密钥。 通常，如果购买的是实物 Windows 拷贝，产品密钥应该在标签上或者在 Windows 随附包装盒中的卡上。

注意: 无线显示应用在运行 Windows 11 版本 22H2 及更高版本的设备上可用。如果运行的是早期版本的 Windows，请在任务栏的搜索框中输入 “连接”，然后在结果列表中选择“连接”，从而启动 “连接” 应用。 若要了解正在运行的 Windows 版本，请参阅 我运行的是哪个版本的 Windows 操作系统？

Optimizations for windowed games improves gaming on your PC by using a new presentation model for DirectX 10 and DirectX 11 games that appear in a window or in a borderless window.

Find out how to get a DVD player app, add-on, or plug-in, or whether you can upgrade your edition of Windows to add DVD playback.

Windows Update downloads updates for Windows Security automatically to help keep your device safe and protect it from attacks.

OneDrive.You can use OneDrive to sync both your work or school files and personal files. The storage remains separate, so you can't sync work or school folders to your OneDrive personal folders, but you can copy or drag and drop files from one to another.

Type info in the search box on your taskbar, and then select System Information.