This post will address the question why some machines (server and/or client computers) may not show up in the SBS Console. First, we will look in Active Directory Users and Computers (dsa.msc) to understand the Organizational Unit (OU) structure and how it impacts the visibility of client computers and servers in the Windows SBS console. Secondly, we will move the machines to the correct OU so that they will display in the SBS Console.
When opening SBS Console > Network > Computers, you may notice that some machines, client computers and/or servers, are not displayed.
To understand why some machines may not show in the SBS console, we have to look at the Active Directory (AD) structure. Following is an example of the typical SBS AD structure:
Notice the MyBusiness OU that is added during the SBS installation containing all SBS related OUs. The SBSComputers and SBSServers OUs determine whether or not a client computer or server is shown in the SBS console under Client Computers or Servers respectively. Only machines listed in these two OUs will be shown in the SBS console.