Right click the network icon in the right side of the taskbar and select Diagnose network problems or open Get Help for Network & Internet. Make sure Wi‑Fi is turned on. Select the No internet icon on the right side of the taskbar, and make sure Wi-Fi is turned on. If it isn't, select it to turn it on. Also, make sure Airplane mode is turned off.

可以通过"开始"菜单>设置 >更新& 安全 >故障 排除 > 查看历史记录 并查找以下内容来检查故障排除历史记录，以查看设备上 是否已运行此故障排除程序： Windows 更新疑难解答. 自动修复系统文件和设置以修复设备上的问题. 后续步骤. 设备现在应该能够运行.NET Framework应用程序，而无需执行进一步的步骤。 Microsoft 正在努力解决此问题，并将在即将发布的版本中提供更新。

Describes methods to prevent users from connecting to a USB storage device that is connected to a Windows XP-based, Windows Server 2003-based, or Windows 2000-based computer.

Files and settings stored in the Users or Documents and Settings subfolders of Windows.old (including the default My Documents folder in Windows XP) might still be available in Windows.old after 28 days, but other files, including Windows installation files, will be deleted.

11/13/2018. Version: Windows 10, version 1809, Windows Server, version 1809, and Windows Server 2019. March 8, 2019 11:15 PM PST. Windows Update customers were recently affected by a network infrastructure event on January 29, 2019 (21:00 UTC), caused by an external DNS service provider’s global outage.

Use this app to try to recover lost files that have been deleted from your local storage device (including internal drives, external drives, and USB devices) and can’t be restored from the Recycle Bin. Recovery on cloud storage and network file shares is not supported.

Make your first PivotTable. Get more out of PivotTables. Other training. Templates. A list of Excel training, from entry level to advanced skills, plus templates and other resources.

All you need to open and edit an Office file is a ZIP utility and an XML editor. Easier detection of documents that contain macros Files that are saved by using the default "x" suffix (such as .docx, .xlsx, and .pptx) cannot contain Visual Basic for Applications (VBA) macros and XLM macros.