I woke up this morning (September 30, 2016) when someone from "Windows Tech Support" called me saying that my PC was sending them some "mysterious errors"! (I know... They were those darn scammers....)
However, to my surprise when I booted my PC to start my work, a message from Windows Defender appeared saying that I needed to "scan my PC", so I did, but Oh Surprise!!!
I tried to update the virus definition files and it failed, then the problem started!
As many have reported here, WD refuses to Turn ON!! :( WHY?
It was working perfectly ever since I upgraded to Windows 10! I do have other antivirus installed, but they are not actively scanning my machine, only on demand because I thought that WD would do its job.
Here is a screenshot of my issue:
As mentioned before, it was working fine as I scanned my PC two days ago with no issues.
What has happened? What changed? Is there a new update that breaks WD? What is error code 0x800705b4? Why WD cannot be enabled?
I see endless posts here and I'm not sure if they actually solve the problem. They just tell you go here, here, there, over there, read more stuff, etc and nothing seems to work.... :(