I am using VS2012 and InstallShield LE
I also ran into the same problem. In my case, the service was not removed from the Service.msc window. Apparently, the registry was not completely cleaned up when I previously deleted it (from "Add or Remove Programs").
Then I tried the command below. SC DELETE Then he cleared all the changed entries in the registry, and this time the installation went fine.
The following is help for this command (taken from SC help on the command line) delete ---------- Deletes the service (from the registry).
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