How to Uninstall .exe silently in c++

Question

I have UninstallString and I want to uninstall the program silently so that no user interaction involved. I have the UninstallString like the following :

• C:\Program Files\Notepad++\uninstall.exe
• C:\Program Files\7-Zip\Uninstall.exe

• C:\xampp\uninstall.exe

  and so on ...

I have opened these as a process But I don't know how to uninstall it silently.

I have heart some approach like find the windows and then send the OK keyStrokes but I don't know how to do it.

if it is a windows installer then we can use something like...

 MsiExec.exe /I{GUID} /q 

But how to do for above UninstallString which have .exe as the path.

Any help/Approaches will be highly appreciated.

Thanks a lot.

Answer 1

Silent uninstall command varies on different installer.

For example,

If installer is built using Wix toolset, it supports commands like: /s, /S, /qn, /quiet . i.e,

UninstallString /quiet

For, NSIS based installer, /S .

For, Install4j based installer, -q .

For, Inno-setup based installer, /SILENT, /VERYSILENT .

etc.

You can find details about Silent install parameters from this site.

Moreover, there has a tool called WMIC. Some people also directing to use this. You can find it from this link. [Though it did not work for me]

Answer 2

As MAQ678 already told there are plenty of different Installer Type. Sometimes (mostly not, because Publishers are lazy) you can find the silent uninstall switch in the registry under HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall if the package has an QuietUninstallString entry.