Login to your exchange server Open IIS manager then drill down to EXAdmin web site right click exadmin and select properties. then select the “directory security” tab
Click on the Edit Button next to Secure Communications (Bottom one) and uncheck require SSL
The hit OK and you will now be able to use PFDavAdmin on your public folders
I know this a mute point for all those that have moved away from exchange 2007 but for those who are still stuck there…..