Vagrant laravel box, guest machine entered an invalid state

Question

Laravels Homestead vagrant box worked fine until today. After an windows auto update the server fails to start and throws the following error message:

The guest mach

Answer 1

I just went through the same error when trying to start a VirtualBox VM. The VM started earlier in the day and after I installed some Windows updates it stopped working. Here is what fixed it:

1. Open Control Panel, Programs, View Installed Updates.
2. Scroll down to Microsoft Windows.
3. Find the Security Update for Microsoft Windows (KB3004394).
4. Select that update, then click Uninstall at the top.
5. Reboot and VirtualBox should again be working.

I just lost an hour to this problem.