Windows 10 Auto-Update Fail

The earliest public build of Windows 10 (9851?) expired on April 15. This shouldn't be a problem, though, because it automatically downloads and installs the newest version of the operating system. Right?

Right?

Nope. If the computer is configured to sleep after only a short period of inactivity or if it is never on at the scheduled upgrade time (I think the default is 2:00 AM), it will never get upgraded. A while after its expiration date, it will start blue-screening with END_OF_NT_EVALUATION_PERIOD, indicating that the trial version of Windows can no longer be used.

On some computers, I've found that the PC Settings place to check for new builds says there are no new builds when there definitely are. This leaves me with no means of upgrading short of manually downloading, expanding, and using a DVD-size ISO.