--- a/vagrant.rst	Tue Dec 18 13:06:21 2018 +0200
+++ b/vagrant.rst	Wed Dec 19 09:42:44 2018 +0200
@@ -17,6 +17,15 @@
 https://www.vagrantup.com/docs/vagrantfile/
   Load Order and Merging.
 
+Pointing to VirtualBox location
+===============================
+
+Set ``VBOX_MSI_INSTALL_PATH`` variable::
+
+  VBOX_MSI_INSTALL_PATH=c:\opt\VirtualBox
+
+It is set/updated by VirtualBox installer and was ``VBOX_INSTALL_PATH`` before 4.3.12 (2014).
+
 Managing names
 ==============