Office 2016 ADMX templates, seemingly broken for Outlook ADMX
In short, I tested it myself, but the latest Office 2016 ADMX files seem to have got a messed up XML tag, rendering the Outlook policy useless. I tested both the 32 and 64 bit templates. They both have problems with Outlook.
I've reached out to report this issue.
At least now you know if you're trying it yourself... you're not crazy !
The error when adding to your Policy store looks like this after you click on Admin Templates.
The issue is the /policies closing tag is before the final /policy closing tag. Looks like someone added a policy after the fact, and didn’t put it in the right spot. The /policies tag on line 6285, should be on line 6296 (Followed by /policydefinitions.) See screenshot below.