Summary

Synopsis

Discussion

Installation Designer
->Organization
->Components
->Select a component (Create a new component if none exists by right click New Component in the middle pane)
-> Never Overwrite property (in the right pane)

Setting this property to 'Yes' will ensure that the component is not installed or reinstalled if the key files exists on the target machine, regardless of the file version.

Setting this property to 'No' will do the following:

• If the file version on the target system is newer than the version being installed, the file on the target system is not overwritten.
• If the version being installed is newer than the file on the target system, the file on the target system is overwritten.

Note that Windows Installer only uses the components key path to determine if it should install the component. If the key path does not already exist on the target machine, or is unversioned, Windows Installer will install the component as if this property was set to 'No'.

Additional Information

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