I am new to Wix. While installing a msi, I would like to use the util:CloseApplication to detect if notepad.exe is running. My simple code. <Wix xmlns="http://schemas.microsoft.com/wix/2006/wi" xmlns:util="http://schemas.microsoft.com/wix/UtilExtension"> <util:CloseApplication CloseMessage="no" Target="notepad.exe" RebootPrompt="no"/> <InstallExecuteSequence> <Custom Action="WixCloseApplications" After="InstallInitialize"/> </InstallExecuteSequence> Failed to in both Wix 3.10 and 3.11 toolsets. Any suggestion? Have also [...] read more