Delivery Optimisation doesn't work

So this HUGE update landed last week and I rolled it out to the first of my computers. It downloaded and installed boom-bang, no hesitation, no repetition, no problem. Then I started on the other two.

Apparently 'Delivery Optimisation' isn't a thing. Both the other machines, both Win10-64, downloaded their own copies, which on my 4 Mb DSL line took the better part of the entire weekend. In fact, over the 2 days, I have managed to download over 21 GB, and I have done *nothing else* but try update these computers. The downloads repeatedly would get to an arbitrary number like 43% or 78% and then go back to 0%, or after hours and hours of downloading eventually move on to 'Preparing to install' - another process that takes several hours - only to go back to 'Downloading updates 90%' (or some other random number) - lather, rinse, repeat. So, no 'Allow updates from other PCs' then, even though I have this set 'On' with the option 'PCs on my local network' selected.

I thought the whole plan with Delivery Optimisation was to avoid repeated huge downloads. Yeah, I know, bandwidth is cheap now (well, apparently it is in the US, although here in the Third World, not so much) but not everyone has fibre speeds. During the several hours it takes to download this 'feature update' (really? Something over 4 GB, looks more like a whole version upgrade to me) my line is totally maxed out and I can't even play Solitaire. Literally, 'Solitaire is having trouble connecting to the Internet. Retry?'

Time for MS to 'optimise' their optimisation, methinks.

I have never personally seen delivery optimization to work. That's why on the big "next version" updates, I download it on day one and use that single download to update all of my computers.

Thanks for that info - I have done before (Creators Update) but kinda forgot about this one

I actually started the post to ask about a different problem, that magically fixed itself while I was typing, and the supplementary question became the question. So... thanks again

dalchina said:

I guess you mean this isn't working for you:

That part, yes. Except I have it switched "ON" on all three PCs.

dalchina said:

Hi, did you know you can freely download Win 10 iso's and thus upgrade as many PC's as you like from 1 iso downloaded once? (Assuming it's the correct language and 'bitness' for all).

Umm... yeah, except the ISOs currently available [Windows Download - #1 Windows ISO Download Source] are Build 16299.15 which is last month's version - this weekend's big download is Build 16299.64

dalchina said:

Yes- Unfortunately MS does typically issue very large updates after a major build....

But that's hopefully good, 'cos then I'll have waited for others to experience the pain of the initial bugs, and upgrade after the big upgrade a couple of months after the build release...

On reflection, I may have been confused about what actually happened. I downloaded the ISO for build 1709 last month, and installed on at least a couple of client machines but 'may not' have deployed to my own machines. So what downloaded over the weekend was probably that *with* last week's Super Tuesday updates rolled up into it. Sigh. If only I had realised what was happening I could have installed the FCU and then let the couple hundred MB update download... we live and learn, eh.