Note: You might not be able to change the power mode when a custom power plan is selected.If you can’t set the power mode in Power & battery settings, open Control Panel, select System and Security > Power Options, then choose a Balanced power plan.

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

Select Notifications to expand it, and turn notifications, banners, and sounds on or off for some or all notification senders.

There are a few common scenarios in which Windows running on a PC might be discovered to be non-genuine during validation. Repairs. If your PC has been repaired, you might start to see messages on your desktop that Windows isn't genuine.

Ensure these modes create an alert that is visible on your device. Make sure you have a device signal and Internet connection. Make sure your phone calls and text messages are getting through to your mobile device.

Screen time limits in Microsoft Family Safety are a great way to balance online habits within your family group. You decide when and for how long family members can use their connected Windows, Xbox and mobile devices.

Here’s how to reinstall Microsoft Edge whether you’re a Windows or Mac user: Open any working browser. (Note: If you’re a Windows user and your Microsoft Edge is not currently functioning, to open Internet Explorer, type IE in the search box on the taskbar and then select Internet Explorer from the results.Or press the Windows logo key on your keyboard and then type IE in the search bar.)

First time, infrequent senders, or senders marked [External] - While it's not unusual to receive an email or Teams message from someone for the first time, especially if they are outside your organization, this can be a sign of phishing.Slow down and take extra care at these times. When you get an email or a Teams message from somebody you don't recognize, or that Outlook or Teams identifies ...

To help protect your privacy, the new Microsoft Edge sets tracking prevention to balanced by default. For increased protection, you can switch your tracking prevention to strict or block all third-party cookies.

查找有关 Windows 操作系统的帮助和操作方法文章。 获取对 Windows 的支持，并了解安装、更新、隐私、安全等方面的信息。