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This isn't good enough. Do the following
- Open up the properties dialog
- Select Log On
- Select Browse
- Enter a name that has administrator privileges (it doesn't have to be Administrator as shown below - on my Windows 10 Home laptop I've put my login name as I have admin rights)
- Select Check Names, if the name is valid the user named will be prefixed with the machine name
- Select OK, and Apply through all other dialogs to get back to the Windows Services Window