The Microsoft Authenticator app helps you sign into your accounts when you're using two-step verification.

You can view and clear your Microsoft Edge browsing history stored on a single device, across all synced devices, and in the cloud. You may choose to clear your browsing history at any time.

Install Microsoft 365 2019 or 2016 on a PC. Remember a one-time purchase version of Microsoft 365 is licensed for one install only. Depending on your browser, select Open file (in Edge or Internet Explorer), Setup (in Chrome), or Save File (in Firefox).

If your purchase of Office or Microsoft 365 came with a product key, you enter your product key on one of the websites listed below for your product. After you enter your key, you can download and install Office, or you can renew your Microsoft 365 subscription. Tip: Get tech expertise with Business Assist.

share their data. You can learn more about Mic rosoft’s data collection and use in the product

Turn search history off or on. Your search history shows what you searched for, the dates of your searches, and sites you have gone to. Also, based on results that you've clicked, it can help improve your search results.

了解 Xbox X|S、Xbox One、Xbox 360 和 Windows 10 上的 Call of Duty（使命召唤）、如何购买该游戏以及从哪里可获取疑难解答帮助。.

要查找你所在国家/地区的客服电话号码，请单击一个地区并查找你所在的国家/地区。. 注意: Surface 设备的支持案例只能 在线 启动。.

Contact Microsoft Support. Search Request history. We're here to help. Tell us your problem so we can get you the right help and support.

在微软待办中添加截止日期和提醒. 使用截止日期和提醒，掌控每件事的执行进度。. 计划的任务将自动显示在“已计划”智能列表中，可以在其中查看今天、明天以及以后到期的任务。. 选择任务以查看详细视图。. 选择 添加截止日期 ，然后选择任务的截止日期 ...