Wake on Lan Feature Stopped Working

luisavila40

Hello and thanks in advance for any help received.  I spend most of the time travelling accessing my Office PC via teamviewer.  Wake on Lan Feature has been working perfectly since it was set up until a couple of days or maybe a week ago.  It is not working now and i have no idea why.  Is this a teamviewer issue?  Or is there a known issue caused by a  windows update?

Very urgent matter any help is much appreciated.