Troubleshooter for repairing Windows Update system files and settings
You can check troubleshooting history to see if this troubleshooter has been run on your device by going to Start > Settings > Update & Security > Troubleshoot > View troubleshooting history and looking for the following: Windows Update troubleshooter. Automatically repair system files and settings to improve device security.
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Windows 7 N 版本推出五个版本: 简易版、家庭高级版、专业版、企业版或旗舰版。. Windows 7 N 版本让你可以自由选择管理和播放 CD、DVD 及其他数字媒体文件所需的媒体播放器和软件。.
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Windows Update Troubleshooter - Microsoft Support
Learn how to run Windows Update Troubleshooter to resolve errors downloading or installing Windows updates.