We deployed this key in this link through GPO before we knew about the ADMX being incorrect. I was hoping that I could change it in a policy file to change the data type.
http://support.microsoft.com/kb/2479719?wa=wsignin1.0
I have the policy definitions stored on our domain sysvol, but I don't see any reference to the key type in the outlk14 or outlk15 admx files. The .POL file seems to be binary. We have a mixture of XP & Win7 clients, and I'm not crazy about pushing out the GP PReference client side extensions just to fix this bug. What other options do we have to fix this so that it can be managed completely within the GP Mgmt console?