Docker启动失败

我已经安装了 Docker，然后我已经启动了 Docker。Docker 说“Docker 正在启动”。然后，Docker 说“Docker 无法启动”。拜托，你能帮我吗？

Docker 错误详情：

System.InvalidOperationException:
Failed to deploy distro docker-desktop to C:Users---AppDataLocalDockerwsldistro: exit code: -1
 stdout: The operation could not be started because a required feature is not installed.

 stderr: 
   at Docker.ApiServices.WSL2.WslShortLivedCommandResult.LogAndThrowIfUnexpectedExitCode(String prefix, ILogger log, Int32 expectedExitCode) in C:workspacesPR-15138srcgithub.comdockerpinatawinsrcDocker.ApiServicesWSL2WslCommand.cs:line 146
   at Docker.Engines.WSL2.WSL2Provisioning.<DeployDistroAsync>d__17.MoveNext() in C:workspacesPR-15138srcgithub.comdockerpinatawinsrcDocker.DesktopEnginesWSL2WSL2Provisioning.cs:line 169
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Docker.Engines.WSL2.WSL2Provisioning.<ProvisionAsync>d__8.MoveNext() in C:workspacesPR-15138srcgithub.comdockerpinatawinsrcDocker.DesktopEnginesWSL2WSL2Provisioning.cs:line 78
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Docker.Engines.WSL2.LinuxWSL2Engine.<DoStartAsync>d__25.MoveNext() in C:workspacesPR-15138srcgithub.comdockerpinatawinsrcDocker.DesktopEnginesWSL2LinuxWSL2Engine.cs:line 99
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Docker.ApiServices.StateMachines.TaskExtensions.<WrapAsyncInCancellationException>d__0.MoveNext() in C:workspacesPR-15138srcgithub.comdockerpinatawinsrcDocker.ApiServicesStateMachinesTaskExtensions.cs:line 29
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Docker.ApiServices.StateMachines.StartTransition.<DoRunAsync>d__5.MoveNext() in C:workspacesPR-15138srcgithub.comdockerpinatawinsrcDocker.ApiServicesStateMachinesStartTransition.cs:line 67
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at Docker.ApiServices.StateMachines.StartTransition.<DoRunAsync>d__5.MoveNext() in C:workspacesPR-15138srcgithub.comdockerpinatawinsrcDocker.ApiServicesStateMachinesStartTransition.cs:line 92
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at Docker.Engines.Engines.<WaitCurrentTransitionsAsync>d__30.MoveNext() in C:workspacesPR-15138srcgithub.comdockerpinatawinsrcDocker.DesktopEnginesEngines.cs:line 358
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Docker.Engines.Engines.<RestartAsync>d__26.MoveNext() in C:workspacesPR-15138srcgithub.comdockerpinatawinsrcDocker.DesktopEnginesEngines.cs:line 250

回答

 These steps are quoted from the "this" named hyperlink above. 
1. Open "Windows Security"
2. Open "App & Browser control"
3. Click "Exploit protection settings" at the bottom
4. Switch to "Program settings" tab
5. Locate "C:WINDOWSSystem32vmcompute.exe" in the list and expand it
6. Click "Edit"
7. Scroll down to "Code flow guard (CFG)" and uncheck "Override system settings"
8. Start vmcompute from powershell "net start vmcompute"
9. Then go back and command wsl --set-default-version 2

回答

dism.exe /online /enable-feature /featurename:Microsoft-Windows-Subsystem-Linux /all /norestart

wsl --set-default-version 2