uninstall docker from windows - DockerToolbox

Question

unistall docker from windows

i'd like to uninstall completely docker for windows (Dockertoolbox) to clean the system well and reinstall it again

so i've began to remove the default virtual machine like the documentation says: https://docs.docker.com/toolbox/toolbox_install_windows/#how-to-uninstall-toolbox

so i did docker-machine rm default

C:\Users\a.pinato>docker-machine rm default
About to remove default
WARNING: This action will delete both local reference and remote instance.
Are you sure? (y/n): y
Error removing host "default": C:\Program Files\Oracle\VirtualBox\VBoxManage.exe unregistervm --delete default failed:
0%...10%...20%...
Progress state: VBOX_E_FILE_ERROR
VBoxManage.exe: error: Machine delete failed
VBoxManage.exe: error: Could not delete the medium storage unit 'C:\Users\xxxxxxx\.docker\machine\machines\default\disk.vmdk' (VERR_SHARING_VIOLATION)
VBoxManage.exe: error: Details: code VBOX_E_FILE_ERROR (0x80bb0004), component MediumWrap, interface IMedium
VBoxManage.exe: error: Context: "enum RTEXITCODE __cdecl handleUnregisterVM(struct HandlerArg *)" at line 165 of file VBoxManageMisc.cpp

Answer 1

from task manager i closed all instances of vboxheadless and i repeated docker-machine rm default

sucessfully removed