@sashar-msft yes I am currently having this issue. I have installed the most recent version of AD connect on Windows SBS 2011.
Azure Active Directory Connect Synchronisation Service Error
I am trying to do a migration of my company on-premises exchange server 2010 to O365. I ran IDFix and fixed all the errors. However, when I am trying to in the AAD Connect I am receiving the following error message. I am also attaching the System Event Logs below the error message.
How did you set up AAD Connect? What's your goal configuration with sync settings?
Are you still having this issue ? On which OS version you are trying to install your AD Connect ?
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Unfortunately, Azure AD Connect cannot be installed on Small Business Server. The server must be using Windows Server standard or better. Please refer to Azure AD Connect prerequisites documentation for details.