laravel 5 - There was an error while executing `VBoxManage`, a CLI used by Vagrant for controlling VirtualBox. windows 10

Question

I just got laravel homestead to run yesterday using powershell. Now, it won't even run. I just suspended vagrant and turned off my pc. Now it's just giving me this error:

Bringing machine 'default' up with 'virtualbox' provider...
==> default: Checking if box 'laravel/homestead' is up to date...
==> default: Clearing any previously set forwarded ports...
There was an error while executing `VBoxManage`, a CLI used by Vagrant
for controlling VirtualBox. The command and stderr is shown below.

Command: ["modifyvm", "b21f2dd0-7f73-4d0f-b1e0-0f82ecdda1fe",    
"--natpf1", "delete", "ssh", "--natpf1", "delete", "tcp33060", 
"--natpf1", "delete", "tcp44300", "--natpf1", "delete", "tcp54320", 
"--natpf1", "delete", "tcp8000"]

Stderr: VBoxManage.exe: error: Code E_FAIL (0x80004005) - Unspecified   
error (extended info not available)
VBoxManage.exe: error: Context: "LockMachine(a->session,  
LockType_Write)" at line 493 of file VBoxManageModifyVM.cpp

Answer 1

I had the same problem and the previous answer didn't work for me. I opened the VirtualBox GUI and saw that the virtual machine was running. I stopped it and then I executed "vagrant up". All worked well.