- if you're very lucky, you worked out you had to turn on system restore (it's off by default), and can use that with a boot disk - whether it will really then help is another matter.
- startup repair from a boot disk? Probably a bit unlikely, but..
I rebooted, which did not fix anything. I did some searching, found a way that fixed this for an earlier version of Windows, by stopping and restarting the scheduler service, but that option is greyed out in Windows 10. Having gotten nowhere, I was about to give up, when I happened to check the Action Center, which showed that updates had been scheduled, so I clicked on that message, which took me to the proper location, where I was able to find that my update was set for something such as 0303 tomorrow, offered to let me reschedule, or to restart.
I chose to restart, and the first thing I did when the computer was ready was to go back to the scheduler. To my dismay, the same errors appeared, but as soon as I cycled through them, the Task Status box filled in. I tried refresh, which does not remove the messages, but I have determined that each time I enter the scheduler and cycle through the messages, the box becomes active again.
I originally did a clean install of Build 10240 on a new SSD and have been doing all the automatic updates so far. The cumulative update installed in about 3 minutes and my system rebooted fine. After that I did another reboot just to be sure everyting was OK - and it was.
I have had these for a few days already Security Update for Windows 10 for x64-based Systems (KB3074683)
Update for Windows 10 for x64-based Systems (KB3074686)
Update for Windows 10 for x64-based Systems (KB3074678)
Reacting to a few 'privacy' issues, I had turned off a few options when available.
Upon reading this thread, I discovered Windows Update was missing from Control Panel, and nonresponsive from Start Menu/Settings. A search of Microsoft for KB3081424 from a non-Edge browser netted zilch.
Thankfully, a link to the download was available in this thread.
After a fairly quick installation of the cumulative update (and it remains up-to-date), Windows Update returned in Start Menu/Settings. However, it remains missing in Control Panel.
One negative result from the Cumulative Update: hovering over a pinned taskbar icon normally highlights the icon. Upon removing the mouse cursor, the highlight goes away. It no longer goes away. Only by highlighting another taskbar icon does the highlight go away. Of course, now the other taskbar icon has the highlight. I had to highlight an active taskbar icon to make the inactive taskbar icon no longer highlighted.