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After changing the settings I did not reboot. The following website, which has been mentioned previously in this thread walks you through the process with screenshots. https://www.windowscentral.com/how-change-your-pcs-dns-settings-windows-10
Yesterday I changed my settings to the Google DNS and then obtained all the available updates (including Apps from the store). I then changed back to the default settings. This morning without thinking I checked for updates and it worked perfectly on the default settings. Not sure if what I did forced the Hub to get new settings that resolved the issue or in the 30 minutes yesterday that it took to obtain the updates BT/Microsoft fixed the problem. To much of a coincidence I think!
Just switched my DNS setting back to the router address (i.e. BT DNS) and Windows Update is working again.
Hasn't worked for me. I rather think it's still a work in progress for dear old BT.
Having changed to Google DNS and had various updates installed, I reverted to BT DNS, I think, and it is working fine.
Still same for me and tried various DNS servers and resetting WU etc, know its not my destop PC as Surface Tablet and Laptop both same issue, did have issues with XBox Live but thats resoved in last day, WU been going on since 29th Jan! Office 365 is fine as to updates.
I know DNS issues can take a while but over 3 days really?
@gsxrguy46wrote:I thought, that if connecting using WiFi via a BT Smart Hub, the DNS settings couldn't be changed. Or am I missing something?
Also if your using WiFi it's this connection you need to change the DNS settings for.
Found this - worked for me !
There are multiple reports of Windows update not being able to connect to the Update server and other Microsoft services not being able to connect to the Internet. While this is being investigated, you can try changing the DNS and see if it resolves the issue for you.
To change the DNS, perform the following steps:
If that doesn't help, consider waiting for a day or two when the Internet service providers across the world correct it.