After removing a number of other Add-ins, Lights-out started to behave erratically. I have noticed this before and the solution has been to uninstall, then reinstall, LO. However, on this occassion, I am unable to uninstall LO via the dashboard. The uninstall program just hangs and then eventually gives message saying that uninstall didn't complete. At this point the LO service has stopped. Repeating the excercise produces the same effect. Rebooting the server reinstates the LO service but uninstall again hangs. Attempting to re-install after failed uninstall predictably gives message that LO is already installed. On another occasion, after reboot, I got message that installation process was underway - this cleared after a few minutes.
Tinus, could you please advise on a manual uninstallation. I remember finding a procedure for WHS v1 some time ago but I can't recall seeing one for WHS 2011