vMotion fails at 10% – Necessary module isn’t loaded

I’ve recently had a problem with a host ESXi 5.0: all vMotion failed at 10% showing error "Necessary module isn’t loaded".

After a short search I’ve found two KB regarding this issue: KB1013150 and KB2013128.

Here is quick steps to restore vMotion functionality:

1. Using vSphere Client, connect to the host directly or throught vCenter
2. Go to Configuration -> Advanced Settings
3. Select Migrate, set Migrate.Enabled to 0 e click OK
4. Connect by SSH to host and run this command:
   esxcli system module load -m migrate
5. Reconnecto to host using vSphere Client and set back Migrate.Enabled to 1

Hope this helps someone else