Docker on windows 10 can't startup after deleting MobyLinuxVM in Hyper-V manually

Question

At first the docker work well on my Windows 10 with official version.

Then I deleted the MobyLinuxVM in Hyper-V for some reason. After that the docker can\'t work. <

Answer 1

Then I reinstall the docker and turn on the feature of Hyper-V again.

Make sure to turn on the feature of Hyper-V first (and reboot)

Then reinstall Docker for Windows.
See "What to know before you install":

The current version of Docker for Windows runs on 64bit Windows 10 Pro, Enterprise and Education (1511 November update, Build 10586 or later).

The Hyper-V package must be enabled for Docker for Windows to work. The Docker for Windows installer will enable it for you, if needed.

Your particular error message is reported in docker/for-win issue 248 and before that in issue 214

Unable to create: 
The running command stopped because the preference variable "ErrorActionPreference" or common parameter is set to Stop: 
The object already exists.

As noted in this comment and here, try and delete the saved VM and restart.

you should be in C:\Program Files\Docker\Docker\resources to run the commands.
So let me refine the sequence of commands that you could run:

• exit the application
• Stop-Service com.docker.service
• cd 'C:\Program Files\Docker\Docker\resources'
• .\MobyLinux.ps1 -Destroy
• check that the VHDX file (C:\Users\Public\Public Documents\Hyper-V\Virtual hard disks\MobyLinuxVM.vhdx) is removed
• .\MobyLinux.ps1 -Create