Major Upgrade without uninstallation of Windows Service
问题 I am really very sorry for being redundant. I have checked a lot of other posts in this site itself and perhaps some other sites. I am not able to get Major Upgrade working without uninstalling & reinstalling of service. I am changing the Product Code and Version and the UpgradeFileComponent is the component that is part of the Upgrade. All the remaining are the same as in 1.0.0. I am doing a POC and hence would like to make only this small change (not as a patch, but as a major upgrade).