I’m new to Wix and to Windows Installers in general so some of this is likely wrong or obvious. Still, I couldn’t find much information on how to do set file permissions for a particular user account so I thought I’d share.
I needed my installer to set the folder permissions for the App_Data folder in an ASP.NET site. Typically, you need to give the “Network Services” account write permissions to this folder. I scoured the Internet for a solution and posted a question on Stack Overflow before coming up with my own solution.
<CustomAction Id="PermissionAppData" Directory="TARGETDIR" ExeCommand=""[SystemFolder]cacls.exe" "[INSTALLDIR]\App_Data" /T /E /G "NT AUTHORITY\Network Service:C"" Return="check" />
Add this custom action to the install sequence table and you’re golden.
There’s a util:PermissionEx custom action in Wix 3 but it seems to only work for “well known” accounts (like Administrators). Maybe there’s a better way but darn if I could come up with it. Feedback appreciated.