In my experience I have found that after following the lockdown guide, the hot fixes never install correctly most likely due to permissions. As part of the lockdown guide you change the service that is running Coldfusion to another user. This is where the permissions problem exists. I don't know exactly why, even when the user has full permission to the CF folder but I find myself just changing the service user back to the default (SYSTEM) and then installing the update. It never has any issues doing this.
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