SCCM 2012 - WQL Query for machines without Endpoint Protection installed
If you need to identify machines that have the Configuration Manager client installed but do not have the System Center Endpoint Protection client installed, then you can use the following WQL query.

 select 
    SMS_R_SYSTEM.ResourceID,
    SMS_R_SYSTEM.ResourceType,
    SMS_R_SYSTEM.Name,
    SMS_R_SYSTEM.SMSUniqueIdentifier,
    SMS_R_SYSTEM.ResourceDomainORWorkgroup,
    SMS_R_SYSTEM.Client
 from SMS_R_System
    inner join SMS_G_System_COMPUTER_SYSTEM
       on SMS_G_System_COMPUTER_SYSTEM.ResourceID = SMS_R_System.ResourceId
    where SMS_G_System_COMPUTER_SYSTEM.Name in
       (select distinct
        SMS_G_System_COMPUTER_SYSTEM.Name
    from  SMS_R_System
        inner join SMS_G_System_COMPUTER_SYSTEM
    on SMS_G_System_COMPUTER_SYSTEM.ResourceID = SMS_R_System.ResourceId
        inner join SMS_G_System_ADD_REMOVE_PROGRAMS
    on SMS_G_System_ADD_REMOVE_PROGRAMS.ResourceID = SMS_R_System.ResourceId
        where SMS_G_System_ADD_REMOVE_PROGRAMS.DisplayName = "System Center 2012 Endpoint Protection" )
    and SMS_R_System.Client = 1

If you have any problems with this query, please leave a comment below.

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