Windows Server 2016。当我尝试打开 Windows 更新（设置 - 更新和安全）时，应用程序崩溃。在事件日志中，我发现：
Faulting application name: SystemSettings.exe, version: 10.0.14393.82, time stamp: 0x57a55dc6
Faulting module name: Windows.UI.Xaml.dll, version: 10.0.14393.3750, time stamp: 0x5ed5df2d
Exception code: 0xc000027b
Fault offset: 0x00000000006d640b
Faulting process id: 0x2824
Faulting application start time: 0x01d84fef35ce1782
Faulting application path: C:\Windows\ImmersiveControlPanel\SystemSettings.exe
Faulting module path: C:\Windows\System32\Windows.UI.Xaml.dll
Report Id: 8fea4980-8d4d-4487-b8a3-15717fa5fd3d
Faulting package full name: windows.immersivecontrolpanel_6.2.0.0_neutral_neutral_cw5n1h2txyewy
Faulting package-relative application ID: microsoft.windows.immersivecontrolpanel
因此，我在 Google 上搜索 0xc000027b，发现：
In elevated command prompt:
dism.exe /online /cleanup-image /scanhealth
dism.exe /online /cleanup-image /restorehealth
对于 dism.exe /online /cleanup-image /scanhealth，我得到：
Deployment Image Servicing and Management tool
Version: 10.0.14393.3750
Image Version: 10.0.14393.3241
[==========================100.0%==========================] The component store is repairable.
The operation completed successfully.
...看起来很有希望。对于 dism.exe /online /cleanup-image /restorehealth，我得到了
Deployment Image Servicing and Management tool
Version: 10.0.14393.3750
Image Version: 10.0.14393.3241
[==========================100.0%==========================]
Error: 0x800f081f
The source files could not be found.
Use the "Source" option to specify the location of the files that are required to restore the feature. For more information on specifying a source location, see http://go.microsoft.com/fwlink/?LinkId=243077.
The DISM log file can be found at C:\Windows\Logs\DISM\dism.log
我检查了链接http://go.microsoft.com/fwlink/?LinkId=243077并发现“Windows 更新是默认修复源，但您可以配置组策略来指定一个或多个具有还原 Windows 功能或修复损坏的操作系统所需文件的网络位置。”
我被难住了。为什么它不检查 Windows 更新？我该如何选择其他来源？下载 ISO？哪一个？