If you dont want to the trouble of setting up a DC and installing the TA on it, another possibility would be to setup a Splunk HF instance and install the windowsad TA's on it, and then install and enable EventGen on that box. That should simulate the events enough that it might fool the app into installing. I haven't tested this yet though, but in theory it should work.
EventGen
https://github.com/splunk/eventgen
Using EventGen - There are a few blog links in this series..
http://blogs.splunk.com/2013/07/31/an-easy-way-to-generate-sample-data/
If you try this, post the results here...
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