Discover how to boost your browsing speed and save battery life with Microsoft Edge's performance features, such as sleeping tabs and efficiency mode.

For some languages, you might need to manually download a speech pack. Go to Start and open Settings .

Windows 11, version 22H2; July 25, 2024—KB5040527 (OS Builds 22621.3958 and 22631.3958) Preview; July 9, 2024—KB5040442 (OS Builds 22621.3880 and 22631.3880)

Find out how to submit a request for a refund for a purchase of digital Xbox content.

检查你的版本. DirectX 是许多 Windows 游戏都需要的一种多媒体技术套件。 如果你的电脑未安装正确版本的 DirectX（产品包装盒上应标有所需的版本），游戏可能无法正常运行。

Want to add a padlock to your email messages? You can use S/MIME in Outlook on the web to increase the security of messages. A digitally encrypted message can only be opened by recipients who have the correct key.

Find Microsoft Excel help and learning resources. Explore how-to articles, guides, training videos, and tips to efficiently use Excel.

Use Auto_Open to create a macro that runs every time you open a specific workbook.

Find out how to submit a case review and learn more about your Xbox enforcements.

Learn how to back up apps, settings, files, photos, and Microsoft Edge favorites and preferences on your Windows PC.