Problem
You want to uninstall a specific software application.
Solution
To uninstall an application, use the GetInstalledSoftware script to retrieve the command that uninstalls the software. Since the UninstallString uses batch file syntax, use cmd.exe to launch the uninstaller:
PS > $software = GetInstalledSoftware UnwantedProgram PS > cmd /c $software.UninstallString
Alternatively, use the Win32_Product WMI class for an unattended installation:
$application = GetWmiObject Win32_Product filter "Name='UnwantedProgram'" $application.Uninstall()
Discussion
The UninstallString provided by applications starts the interactive experience you would see if you were to uninstall the application through the Add/Remove Programs entry in the Control Panel. If you need to remove the software in an unattended manner, you have two options: use the “quiet mode” of the application’s uninstaller (for example, the /quiet switch to msiexec.exe), or use the software removal functionality of the Win32_Product WMI class as demonstrated in the solution.
