Hello,

No, the Windows APIs do not give you the information that let you find out why a file is not writable. But you can use the "Get File Info..." script function to read the file attributes (e.g. "read-only").

Of course, if you have developed your own patent pending algorithm to handle permission/file in-use checking, you can develop a DLL and call that function from the installer. But please don't forget to send us the code so we can add it into SetupBuilder

Friedrich