Expired passwords in OWA

See this link:
https://blogs.technet.com/b/exchange/archive/2010/10/06/3411240.aspx
Exactly what I want.  
Except it doesn't work.  
Users are never prompted to change the password.  Just denied access.  Single Exchange 2010 server on 2008 R2.
Ideas?
Program652Asked:
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The_KirschiCommented:
Do you have Exchange Service Pack 1 applied? This is necessary to make this work.

Also did you doublecheck the registry entry for the right location and maybe typos?
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Program652Author Commented:
<slaps head> Service Pack!
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