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QChain.exe, Install Multiple Hotfixes With Only 1 Reboot

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By: Rod Trent
Posted On: 6/4/2001

Microsoft has released a command-line tool named QChain.exe that gives system administrators the ability to safely chain hotfixes together.

Hotfix chaining involves installing multiple hotfixes without rebooting between each installation. Without this tool, the only supported method is to reboot after each hotfix installation. The QChain.exe tool has the following benefits:

  • It increases uptime for servers because computers are not being rebooted between each hotfix installation.

  • It allows faster installations of multiple hotfixes on a single computer.

  • It is a solution that works on both Windows 2000 and Windows NT 4.0.

To Install Multiple Hotfixes Without Rebooting

  1. Run the hotfix installer with the -z switch to instruct the installer not to reboot after the installation. Add the -m switch (for Quiet mode) in addition to the -z switch if you do not want to see prompts or messages during the installation. The hotfix installer is either:

    The self-extracting package program file (for example, Qnnnnnn_w2k_spx_x86_en.exe)


    Hotfix.exe (if you have extracted all of the files from the package)

  2. After all of the hotfixes have been installed, run QChain.exe.

  3. Reboot the computer.

You could also create a batch file to do this. The following sample batch file demonstrates this method:

@echo off
set PATHTOFIXES=some path

%PATHTOFIXES%\Q123456_w2k_sp2_x86.exe -z -m
%PATHTOFIXES%\Q123321_w2k_sp2_x86.exe -z -m
%PATHTOFIXES%\Q123789_w2k_sp2_x86.exe -z -m

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