I use Wix 5 WixStandardBootstrapperApplication. In the Bundle I added my WPF application to the chain

        <Chain>
            <MsiPackage Id="Setup" SourceFile="$(var.MyProject.Setup.TargetPath)" Compressed="yes">
                <MsiProperty Name="AddDesktopShortcut" Value="[AddDesktopShortcutMsiVariable]" />
                <MsiProperty Name="INSTALLFOLDER" Value="[InstallFolder]" />
            </MsiPackage>
        </Chain>

and I added a custom action in which I install the ImDisk bat file.

string installCmd = $"/silent /lang:english /installfolder:"C:\Program Files\ImDisk" > install.log 2>&1";

var startInfo = new ProcessStartInfo(".....\ImDisk\install.bat", installCmd );

            startInfo.UseShellExecute = false;
            startInfo.CreateNoWindow = true;

            var proc = new Process();

            proc.StartInfo = startInfo;
            proc.Start();
            proc.BeginOutputReadLine();
            proc.BeginErrorReadLine();
            proc.WaitForExit();

            

And after the installation is complete, a new copy of the installer opens for some reason.

enter image description here

If I remove silent install ImDisk from CustomAction everything is fine.

Tell me what I’m doing wrong. Why does the installer reopen after the installation is complete? What’s interesting is that there is no such problem in Wix 3 WixStandardBootstrapperApplication.

I expect after installation/uninstallation is complete not to show the installer again