In Windows 11, ensure that Camera access, Let apps access your camera, and the individual toggle for the Microsoft Store app you wish to use is turned on. If you do not see the app or website you're looking for in the list, it's likely a desktop app. Desktop apps cannot be individually toggled, but access for those apps can be controlled using Let desktop apps access your camera.

参数名称. 说明. range （必需）. 要进行计数的单元格组。 区域可以包括数字、数组、命名区域或包含数字的引用。空白和文本值将被忽略。 了解如何选择工作表中的区域。. criteria （必需）. 用于决定要统计哪些单元格的数量的数字、表达式、单元格引用或文本字符串。

Select Start > Settings > Personalization.The preview window gives you a sneak peek of your changes as you make them. In Personalize your background, you can select a picture, a solid color, or a slideshow of pictures you create.Or you can choose Windows spotlight to see a new image from around the world every day.

If Windows Update finds an updated driver, it will download and install it, and your printer will automatically use it. If a device driver couldn’t be installed automatically, there may be an optional driver available that your printer can use.

Select Add a keyboard and choose the keyboard you want to add. If you don't see the keyboard you want, you may have to add a new language to get additional options. If this is the case, go on to step 4.

Communities help you ask and answer questions, give feedback, and hear from experts with rich knowledge.

家庭成员和组织者可通过多种不同的方式离开或从Microsoft家庭组 中删除，具体取决于其角色。. 在离开之前，家庭成员和组织者 应删除他们不想留在组中的 已保存地点和位置警报 。 个人必须先删除其设置的位置警报，然后才能删除保存的地点。

键盘快捷方式是键或键组合，提供了一种替代通常使用鼠标完成的任务的替代方法。 如果要拍摄屏幕截图或截屏，请参阅 如何获取屏幕截图并向其添加注释。. 本文包括分类为的键盘快捷方式列表：

弹出窗口阻止程序无法阻止哪些弹窗？ 如果在启用此功能并且尝试了上面列出的解决方案后，网页中仍然显示了弹出窗口，则它们可能是网站广告，以弹出窗口的样子呈现。

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.