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Imagine the scene; you are having a problem with a program, and the manufacturer tells you that the solution is a complete uninstall followed by a reinstall. You go to uninstall, and Windows tells you that it can’t find the installer. Looking around, nor can you. So, now you’re up a certain waterway without a certain rowing implement, aren’t you? Not necessarily.
Luckily, Microsoft has created a tool which automatically finds the registry keys in question, and lets you remove them. The tool is called FixIt, and is intuitive to more or less a fault. Keep in mind that the tool does not support the runas command, and must be run by a user that has local administrative privileges.