Download Windows Service Pack Blocker Tool to Prevent and Block Automatic Update

Windows Service Pack Blocker Tool is a package of a Microsoft-signed executable, a script and an ADM template (for Group Policy environment) that allows Windows Vista, Windows XP and Windows Server 2003 users to block and prevent installation of respective Windows Service Pack updates through Windows Update or Automatic Update.

There are several reasons why you may want to block and prevent automatic update of service pack or user ability to install service pack via Windows Update, especially for administrators. Just imagine if your company has thousands of PCs and notebook computers, and all of them is downloading the large service pack concurrently. It not only wasting network bandwidth, but will not slowdown Internet performance. Beside you may also want to evaluate the reliability and performance of service pack before rolling out in your organization. Or you simply just want to hear some reviews first, letting others become Guinea pig (but that’s not the case with Vista SP1 though, which promise huge performance, reliability and compatibility increase, thus which should be installed as soon as possible).

Whichever component of Windows Service Pack Blocker Tool you use, the function is the same, that is to set or clear a specific registry key that is used to detect and block or unblock (the default action without key, unless you have blocked the SP update, else no need to do anything to get the service pack installed on your computer) delivery download of Windows Service Packs from Windows Update to the target computer. The registry key involves is:

HKLM\Software\Policies\Microsoft\Windows\WindowsUpdate

When blocked, a key value named DoNotAllowSP will be created and has the value of 1. When configure to allow service pack to install on the comptur, the key is removed. If you’re single home user, you can set the key manually using Registry Editor without downloading the toolkit if you want to block the installation of any service pack.

The additional advantage of script is that users can specify the remote machine name on which to block or unblock delivery of Windows Service Packs, saving considerable time by eliminating the need to go to physical computer location.

The best thing is that, even though the service pack blocking registry key is set, the toolkit will not prevent the installation of the service pack from CD/DVD, or from the stand-alone download package. Thus once administrator decided to distribute and roll out service pack locally, it can be installed without unset the block.

Windows Service Pack Blocker Tool can be used to stop, block and prevent the following service pack as below. The blocking works for a period of time only, of which once expire will automatically invalidate itself.

  • Windows Server 2003 Service Pack 2 (valid through March, 2008)
  • Windows XP Service Pack 3 (valid for 12 months following general availability)
  • Windows Vista Service Pack 1 (valid for 12 months following general availability)

Download Windows Service Pack Blocker Tool Kit from Microsoft Download Center.


2 Responses to “Download Windows Service Pack Blocker Tool to Prevent and Block Automatic Update”

  1. Download Windows Server 2008 and Vista SP2 RTM (6002.18005) » My Digital Life
    July 1st, 2009 23:42
    2

    [...] quarter of 2009. Those not intends to install SP2 onto their system should download and install Windows Service Pack Blocker Tool Kit. However, Windows Vista SP1 will be made mandatory and started to deploy to all Windows Vista [...]

  2. Troubleshoot Why Vista SP1 Is Not Available or Offered for Installation in Windows Update or Automatic Updates » Tip and Trick
    April 14th, 2008 22:12
    1

    [...] develops Windows Service Pack Blocker Tool for users who wants to delay or don’t want the installation of service pack on their [...]

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