The Splunk App for Windows Infrastructure on Splunk 7.2.1 requires Supporting Add-on for Active Directory 2.2.0, but I only see version 2.1.8 on Splunkbase. I also do not have an option to upgrade from Splunk either?
Is there a separate page/link for the appropriate version of Supporting Add-on for Active Directory?
i installed on my dev box and got the same results you did, i wasnt able to find 2.2.0 either. Have you tried to skip the prereq step? I'm sure it would be fine if you have check marks next to every other item.