Recently, I have installed and setup Sitecore 9.3 on another machine. I faced similar/same kind of issues which I faced earlier. Thought, it would be helpful to the Sitecore Community if I capture and document them along with resolution steps I which took and be successful in settting up. Here are few of them I could document them. 1. Failed to start service 'Sitecore Marketing Automation Engine - sitecore93xconnect.dev.local-MarketingAutomationService (sitecore93xconnect.dev.local-MarketingAutomationService)'. Solution : This issue occurs because of non-self-signed certificates, hence please follow the below steps to resolve your issue. Execute below PowerShell script to find out if there are any non-self-signed certificates: 1. Open the PowerShell Console (Admin mode recommended) 2. Execute below command Get-Childitem cert:\LocalMachine\root -Recurse | Where-Object {$_.Issuer -ne $_.Subject} 3. If it shows any results listing any non-self-signed certificates