Hi @JustinMicheal-7973 ,
Have you run the preparation tasks? See this topic: https://learn.microsoft.com/en-us/exchange/plan-and-deploy/prerequisites?view=exchserver-2019#exchange-2019-mailbox-servers-on-windows-server-2019
That means you should install these softwares before installing the Exchange server.
And also if you gonna install Exchange with unattendant mode, you should first make your AD environment prepared.
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