Hi all,
I've been out of the test lab here for about a week, and so I'm just getting to the first install of the Tuesday Creators Update on any on my Machines.  After a quick backup, I attempted to download the CU making sure my 
WU *Windows Update* and 
WUDO were both enabled and pulling down updates.  In any case, the WU engine was able to update my v1607 b14393.x to b14393.1006 no problem but after trying several times and reboots it would not install the CU. 
 
 
Part of the reason for the post is to let you know that thanks to 
Ragnarok1968 and others their recommendation to use the
 W10 CU UPGRADE ASSISTANT tool worked marvelously!  First time, and it performed the CU upgrade on my main desktop machine here (See my profile for specs; Dell Studio540) with no discernable problems so far! 
 
  
I'll also mention that I tried to get the CU upgrade on my Sony laptop as well, with the same result!  No go! 

  It looks like then that my other nine W10 machines will all need to used the Upgrade Assistant Tool in order to get them upgraded.  I will probably not upgrade them all at this time, in order to leave some on older builds for Customer support purposes.
This post may help some of you that are attempting to change settings on one or more of your W10 computers and 
HOPE this upgrade will come in and install automatically-probably not going to happen.  This is exactly the same problem we had last year with the W10 AU (Anniversary Update) on Aug. 1, 2016.  If you were running older versions of W10 such as v1511, or v10240, the only reliable way many of us found to upgrade to the W10 AU version (
v1607) was via a Clean Install.  I'm supposing that the 
W10 CU UPGRADE ASSISTANT tool was provided by Microsoft to prevent this particular problem.   Good idea Microsoft! 
 
Hope this information proves useful.

Cheers!
<<<<BIGBEARJEDI>>>>