Hi!
Many of our clients experience problems with our installations where some of the files are left undeleted after successful uninstall. This happens with dlls, executables, .sys and other files. Our test lab had tested this on absolutely clean windows installations and the problem still happens at random times. As far as I can see sometimes the file is not unregistered from MSI, sometimes are but not deleted. There are no special actions on the files, no custom deletes or anything similar. We get this on 3 separate products and their installations.
Some of my investigation results are that the problem may occur when our clients/testlab upgrade version A made with AI version lets say 4.5.2 with version B made by the latest AI. Another possible scenario is that our test lab people very often install and uninstall the products and thus is possible that something goes wrong in background.
Does any of your other clients report such behaviour? What could we had done wrong?