In a WiX bundle that includes an MSI with <MsiPackage>, how can I allow downgrades?
The MSI package supports downgrades, and this actually works when installed / downgraded manually using msiexec.
However, the bundle always reports error 0x80070666:
Another version of this product is already installed. Installation of this version cannot continue. To configure or remove the existing version of this product, use Add/Remove Programs on the Control Panel.
It seems to me that the bundle in principle is able to do what the error message basically says: Uninstall the existing version before installing. So I hope there is at least some kind of work-around.
I'm asking explicitly about version 5.
