Check the cables (for wired printers). Make sure that the printer's USB cable is properly connected from the printer to your PC. If your USB isn’t recognized, see Automatically diagnose and fix Windows USB problems. Check the wireless connection (for wireless printers).Do one of the following:

解决激活错误. 如果 Microsoft 365 无法激活，其最后会变为未授权，且 Microsoft 365 的所有编辑功能都会被禁用。 Microsoft 可能由于多种原因变为未授权。

Learn how to sign in and out of Microsoft Teams (free) with a Microsoft account, which you already have if you use Skype, OneDrive, Outlook.com, or Xbox Live.

Important: Before trying any of the solutions below, make sure you back up your personal files. You can back up your Windows PC, or insert a USB drive and use File Explorer to drag and copy important files to the USB drive.If you’re signing into Windows with a Microsoft account, your system settings will be automatically restored after updating, once you’re connected to the internet.

Microsoft Edge. 下面介绍如何在新版 Microsoft Edge 中更改主页：. 打开 Microsoft Edge，依次选择“设置及更多” >“设置” 。

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.

Note: If you see the icon next to the On/Off toggle for an app, you can select it to see the registry location that contains the path for the app. Apps installed through Microsoft Store (.MSIX apps) don’t have these icons. If you select the icon for these apps, File Explorer opens and highlights the executable file.

Select Manage and delete cookies and site data > See all cookies and site data.

To change your screen resolution, use the drop-down menu next to Display resolution.. Note: You should use the Recommended resolution. If you change the resolution, content might appear blurry or pixelated.

了解如何使用 Android、iOS 或 Windows 设备在 Xbox 上玩云游戏。