5 replies to this topic

[samokok]

I have to user a new installer to update/reinstall/uninstall previous installation, but they should use different GUID. Could someone give me a advice.Thanks

[Taco Bell]

I don't use maintenance mode, but for my setups, I record the previous component settings and other installation-related information in the Windows registry, so that it's available to be read in by say a future update/reinstall.

For the uninstall aspect, I simply go to the HKLM\Software\Microsoft\Windows\CurrentVersion\Uninstall area of the registry and look up the UninstallString for the old setup's GUID. Appending the necessary switches on-the-fly to make it silently uninstall.

Hope it helps.

[samokok]

Thanks, it do help. Now I plan to do silient uninstall before next drop installation. However It cannot run another setup.exe within a setup. Any way to solve this?

[Taco Bell]

Use LaunchAppAndWait to launch the uninstall program.

Also, I forgot to mention before that you need to remove the "RunDll32 " prefix from the contents for the UninstallString.

[cap1]

[Taco Bell]

Well this is an old thread, so it took me a moment to get re-acquainted.

Now, how much you want to remove/add from the default uninstall string depends exactly what you're trying to do. However, you'd probably want the resulting LaunchAppAndWait program and command variables to be the following respectively:

- PROGRAM VARIABLE: "C:\Program Files\InstallShield Installation Information\{E102644E-5BC3-4E8A-AF5F-A07087C03013}\Setup.exe"
- COMMAND VARIABLE: "-l0x9 UNINSTALL"

However, you can actually use the full string by breaking it down into the following:

- PROGRAM VARIABLE: "RunDll32"
- COMMAND VARIABLE: "C:\PROGRA~1\COMMON~1\INSTAL~1\engine\6\INTEL3~1\Ctor.dll,LaunchSetup "C:\Program Files\InstallShield Installation Information\{E102644E-5BC3-4E8A-AF5F-A07087C03013}\Setup.exe" -l0x9 UNINSTALL"

In either case though, you can append the -s switch to try and perform a silent uninstallation, but I personally have my own technique since I use my own uninstall wizard.

Finally, don't worry about the "l0x9" parameter.