Vagrant up fails on Windows 10 with VBoxManage.exe creating the host-only adapter

Bringing machine 'admin' up with 'virtualbox' provider...
==> admin: Clearing any previously set network interfaces...
There was an error while executing `VBoxManage`, a CLI used by Vagrant
for controlling VirtualBox. The command and stderr is shown below.

Command: ["hostonlyif", "create"]

Stderr: 0%...
Progress state: E_FAIL
VBoxManage.exe: error: Failed to create the host-only adapter
VBoxManage.exe: error: Code E_FAIL (0x80004005) - Unspecified error (extended info not available)
VBoxManage.exe: error: Context: "int __cdecl handleCreate(struct HandlerArg *,int,int *)" at line 66 of file VBoxManageHostonly.cpp

Just upgrade to latest vagrant an VirtualBox 5.0.2, it worked for me... even if they say VBOX 5.0.2 is not officially supported... I have no other choice...