Hyper-V是微軟的一款虛拟化技術，是微軟第一個采用類似Vmware和Citrix開源Xen一樣的基于hypervisor的技術。
在Windows 10的powershell指令裡，輸入如下的指令行：Enable-WindowsOptionalFeature -Online -FeatureName Microsoft-Hyper-V -All
遇到如下錯誤資訊：
Enable-WindowsOptionalFeature : Enable-WindowsOptionalFeature failed. Error code = 0x800f0831
Microsoft-Hyper-V Error code = 0x800f0831
At line:1 char:1
Enable-WindowsOptionalFeature -Online -FeatureName Microsoft-Hyper-V …
CategoryInfo : NotSpecified: (😃 [Enable-WindowsOptionalFeature], COMException
FullyQualifiedErrorId : Microsoft.Dism.Commands.EnableWindowsOptionalFeatureCommand
再試試第二個指令行：
dism /online /enable-feature /featurename:microsoft-hyper-v-all /All
還是遇到錯誤碼0x800f0831:
The DISM log file can be found at C:WINDOWSLogsDISMdism.log
解決辦法是，進入Windows 10的控制台，在Turn windows features on or off裡先安裝.NET Framework:
之後就能安裝Hyper-V了。