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Make and receive calls using Skype for Business. Set call forwarding options. Edit phone number. Start a Skype for Business conference call. Make and receive a Skype for Business video call

Why some files won't open in Internet Explorer. Internet Explorer uses add-ons such as Adobe Reader to view some files in the browser. If a file that needs an add-on won't open, you might have an older version of the add-on, which needs to be updated.

若要调整Windows 11中的电源和睡眠设置，请选择“启动 > 设置 > 系统 > 电源 & 电池 > 屏幕、睡眠 & 休眠超时”。 在以下时间后关闭屏幕： 选择你希望设备在你不使用设备时（当设备接通电源和电池电源时）在关闭屏幕之前等待的时间。

Use the Quick Assist app to get help with a computer problem from family or friends or help them out. Quick Assist uses a remote connection, so remember to only use it with people you trust, since they can see your computer screen or control your PC (if you allow it).

Get help with your questions about using Microsoft Whiteboard with our how-to articles, tutorials, and support content.

Under Personalization & advertising, turn on or off the setting for Allow Microsoft to save your browsing activity including history, usage, favorites, web content, and other browsing data to personalize Microsoft Edge and Microsoft services like ads, search, shopping and news.

Select the View tab and, in Advanced settings, select Show hidden files, folders, and drives and OK.

Avoid splitting or merging cells: Screen readers keep track of their location in a table by counting table cells. If a table is nested within another table or if a cell is merged or split, the screen reader loses count and can’t provide helpful information about the table after that point.

Windows Security provides built-in security options to help protect your device from malicious software attacks. To access the features described below, tap the Windows Start button, type windows security, select it from the results, and then select Device security.