First, the message you receive may be related to a security issue. Your installer must be run by the administrator because administrative privileges are required to create the services. You can check this in the Condition element.
Secondly, the use of NT Authority\NetworkService , since the account name will not work on non-English systems, since the names of the built-in accounts are localized. Instead, use the plain old NetworkService , which Wix specifically recognizes and resolves to the correct localized name.
Paul lalonde
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