Can't be done economically. ANY machine that can reach Windows Update will also 
feed the snooping reports.

The blocking is probably not needed as it consists of error reports after you've 
turned off everything in the various settings dialogs. Of course, one must never 
run Cortana if one is concerned about privacy.

Note that you MAY have better overall security for personal information if you 
figure out what the reporting addresses are and explicitly block all other 
addresses as a means of mitigating potential third party attacks through these 
semi-open doors. How open they really are depends on the degree of encryption MS 
has used in these reports and interfaces.

{^_^}

On 2016-03-04 16:24, ToddAndMargo wrote:
> On 03/04/2016 03:49 PM, Andrew Z wrote:
>> Uninstall. :)
>
>
> Or just block all access from Windows machines to the Internet.
> And  !!!! turn off Windows Update Service.
>
> And test out your critical Windows software with
> Wine Staging
>
> And if need be, run XP inside a KVM virtual machine
>
>