Microsoft offers with the SPBlockerTools.exe a small tool for download, which prevents the unwanted installation of service packs.
Interesting is the SPBlockerTools.exe for computers that are updated automatically.
Since with such a complex update such as a service pack installation, such automatisms on a server that has to run, for example, can endanger the system, it makes sense to block the service pack installation first and ensure that no incompatibilities occur.

System requirements for SPBlockerTools.exe:

 

1. Windows Server 2003 Service Pack 2 (valid until the end of March 2008)
2. Windows XP Service Pack 3 (valid for 12 months from general availability)
3. Windows Vista Service Pack 1 (valid for 12 months from general availability)

There are three components to this toolkit.
All of them work mainly by creating or deleting a specific registry key that is used to detect and block downloads of Windows service packs through Windows Update.

You can choose from the three components described below, from which you should select the one that most closely corresponds to the circumstances of the computer management structure.


A Microsoft signed executable file

This executable file creates a registry key and locks or unlocks depending on which of the command line options described below is used
the transfer of a Windows Service Pack via Windows Update.

The key used is:
HKLM \ Software \ Policies \ Microsoft \ Windows \ WindowsUpdate


Command line option for the executable file:

/B

The use of the parameter /B creates the key ??DoNotAllowSP?? with the Value 1.
This value blocks the transfer of a service pack to the computer via Automatic or Windows Update.

/U

The use of the parameter /U removes the registry entry created with the parameter / B,
Should the parameter be used without the key ??DoNotAllowSP?? no action is taken.


A script

The function of the script is the same as the executable file, but the name of a remote computer can be specified for which the blocking or unblocking of the Windows service packs should apply.

 
An ADM template (Guideline template)

The ADM template is designed to enable administrators to import Group Policy settings to block or unblock the transmission of service packs.
The group policy can thus be used centrally to carry out the action across systems in the environment.


Important:
The Toolkit SPBlockerTools does not prevent the manual installation of service packs from other data carriers, such as CD / DVD, but only blocks the transfer via Windows Update.

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This tip comes from www.win-tipps-tweaks.de
© Copyright Michael Hille

Warning:
Using Registry Editor or its tips incorrectly can cause serious system problems that may require you to reinstall your operating system. Tampering with the registry files and using the tips is at your own risk.