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I know it is not safe but I need to know how to prevent all computers in my lan to download updates... I have squid as proxy with dansguardian and I use OpenDNS...

I have put on a blacklist on dansguardian microsoft.com but it looks like it is not enough...

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3 Answers

up vote 2 down vote accepted

In order to block it in one section of our network the following domains were redirected to a site with instructions:

  • update.microsoft.com
  • windowsupdate.microsoft.com
  • windowsupdate.com
  • download.windowsupdate.com

These seem to have done the trick here, but it mightn't be the full list.

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You may want to consider, rather than blocking all updates, managing updates with WSUS. Assuming you have a copy of Windows Server and your clients are in a domain, it's a free option that you can use to only deploy updates when and where you want them.

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+1 WSUS is a great way to manage Microsoft update - Central management of what updates are applied and which are not - 1 download instead of many. you could also use the GPO to fully block Microsoft Updates by pointing the update server path as an unreachable location. –  JamesK Jan 7 '11 at 12:40
    
Of course that will be the final aim... Now I just need a way to block updates because there are free roaming pc, I don-t know where, killing my bandwidth –  Pitto Jan 7 '11 at 12:45
    
I'm with Michael and JamesK here despite my answer despite my original answer. –  Niall Donegan Jan 7 '11 at 12:47
    
My question is specific... I just need to know how to block it :) No domain here and install manually wsus on a LOT of clients will be done in future when we'll have domain... Now I just need windows update to stop eating bandwidth for a while... –  Pitto Jan 10 '11 at 11:51
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Its simple go to start menu> control panel (view by small icons)>administrative tools > services. Search for Background intelligent transfer service and windows update ...stop the services and on properties disable them

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It may be simple but it would be tedious to do this for the dozens or hundreds of computers in the OP's network. Could you improve this answer to apply to more than a handful of machines? Maybe pushing out that change via a centralised system? –  Ladadadada Mar 2 '13 at 18:54
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