Summary

Synopsis

Support to set a file?s attribute or a component to Always Overwrite was added in InstallShield 10.5 and later.

Discussion

It is against Microsoft?s logo requirement to always overwrite files without checking version or time and date stamp. Thus, the Windows Installer service does not allow you to Always Overwrite files on the system. It is a limitation imposed by the Windows Installer Service.

Microsoft?s Windows Installer Service overwrites versioned files based on newer versions and text files that do not have version information based on the modified date. Therefore, if the installer package has a file with a newer modified date than the one on the system, it overwrites it. If you want to make sure that a file is overwritten, be sure to deploy the file with the latest version.

Additional Information

For more information on file versioning, see the Windows Installer Help Library topic File Versioning Rules.