As you browse the web, you'll see an icon in the address bar that indicates the security of the connection to the site you're visiting. This icon helps you determine if you can safely send and receive information from the site.

获取 Windows 操作系统的官方支持和帮助信息，以及如何使用 Windows 的指南。

Office Lens is an app for all of your Windows devices. It's a great way to capture notes and info from whiteboards, menus, signs or anything with a lot of text--and even images without text.

Nearby sharing in Windows lets you share documents, photos, links to websites, and more with nearby devices by using Bluetooth or Wi-Fi. You can share files between PCs that are running Windows 10 or Windows 11.

Resolution. To fix this problem automatically, run the "Fix problems that programs cannot be installed or uninstalled" troubleshooter to repair issues that block program installation or removal because of corrupted registry keys.Important To perform many of the methods and steps in this article, you must be logged on to your computer as an administrator.

Select Review activity to check for any unusual sign-in attempts on the Recent activity page.If you see account activity that you're sure wasn't yours, let us know and we can help secure your account—if it's in the Unusual activity section, you can expand the activity and select This wasn't me.If it's in the Recent activity section, you can expand the activity and select Secure your account.

Join Teams meeting with ease using our step-by-step guide. Learn how to join a Teams meeting via your calendar, a dial-in number, or on the web.

To do this. Press. Move to the Tell Me or Search field on the Ribbon to search for assistance or Help content.. Alt+Q, then enter the search term. Open the File page to use Backstage view.. Alt+F. Open the Home tab to use common formatting commands, paragraph styles, and the Find tool.. Alt+H. Open the Insert tab to insert tables, pictures and shapes, headers, or text boxes.

Important: If, for example, you cancel a Microsoft 365 Basic, Personal, or Family subscription, your storage allowance will revert to 5GB of cloud storage, which includes your OneDrive and Outlook.com attachments, and 15GB of Outlook.com storage. If you cancel Microsoft 365 Family, all the people you shared your subscription with will also have their storage allowances reduced.

查找 Windows 7 或 Windows 8.1 的产品密钥. 卸载或重新安装 Windows 7 或 Windows 8.1 时，通常需要产品密钥。 通常，如果购买的是实物 Windows 拷贝，产品密钥应该在标签上或者在 Windows 随附包装盒中的卡上。