providers/virtualbox: catch subprocess launch error [GH-1483]

CHANGELOG.md

@@ -75,6 +75,8 @@ BUG FIXES:
   - providers/hyperv: only set EFI secure boot for gen 2 machines [GH-5538]
   - providers/virtualbox: read netmask from dhcpservers [GH-5233]
   - providers/virtualbox: Fix exception when VirtualBox version is empty. [GH-5308]
+  - providers/virtualbox: Fix exception when VBoxManage.exe can't be run
+      on Windows [GH-1483]
   - provisioners/ansible: fix SSH settings to support more than 5 ssh keys [GH-5017]
   - provisioners/ansible: increase ansible connection timeout to 30 seconds [GH-5018]
   - provisioners/ansible: disable color if Vagrant is not colored [GH-5531, GH-5532]

lib/vagrant/errors.rb

@@ -720,6 +720,10 @@ module Vagrant
       error_key(:vboxmanage_error)
     end
 
+    class VBoxManageLaunchError < VagrantError
+      error_key(:vboxmanage_launch_error)
+    end
+
     class VBoxManageNotFoundError < VagrantError
       error_key(:vboxmanage_not_found_error)
     end

plugins/providers/virtualbox/driver/base.rb

@@ -403,6 +403,9 @@ module VagrantPlugins
           Vagrant::Util::Busy.busy(int_callback) do
             Vagrant::Util::Subprocess.execute(@vboxmanage_path, *command, &block)
           end
+        rescue Vagrant::Util::Subprocess::LaunchError => e
+          raise Vagrant::Errors::VBoxManageLaunchError,
+            message: e.to_s
         end
       end
     end

templates/locales/en.yml

@@ -1231,6 +1231,13 @@ en:
         Command: %{command}
 
         Stderr: %{stderr}
+      vboxmanage_launch_error: |-
+        There was an error running VBoxManage. This is usually a permissions
+        problem or installation problem with VirtualBox itself, and not Vagrant.
+        Please note the error message below (if any), resolve the issue, and
+        try Vagrant again.
+
+        %{message}
       vboxmanage_not_found_error: |-
         The "VBoxManage" command or one of its dependencies could not
         be found. Please verify VirtualBox is properly installed. You can verify