You will need to fully uninstall and reinstall the associated major release (2016, 2017, etc.). Because the tools work with each other, all updates within a major release will use the same path as the first one installed. If there are none installed, you will be able to select the installation path.
But the problem is, I have tried to remove the previous installation in every possible way, deleting most of the relevant entries in regedit. Then I tried to install it, but it always raised error and failed.