When attempting to open the Out of Office Assistant on an Exchange 2007 user mailbox, the following error is displayed:

“Your Out of Office settings cannot be displayed, because the server is currently unavailable. Try again later.”
If you attempt to access the Out of Office Assistant from Outlook 2003, it works fine. Chances are, more than one user is having the same problem with Outlook 2007.
If you do a search for these symptoms, you will find plenty of forum threads and blogs on how to check/reset IIS permissions, assign an SSL cert, check/reset EWS URLs and all that other fun stuff. Chances are, you’ve already been through it yourself, or have continued searching, because you don’t want to waste your day with all those troubleshooting steps.
[I will give you a shortcut through all that in case you haven't done so yet]
Run ‘Test E-mail AutoConfiguration…‘ from the local Outlook client. If it completes without errors, you can skip all the other stuff mentioned in those blogs and knowledge base articles.
You are likely experiencing something that I found today.
You’ve probably been affected by a recent update to the .NET framework. Other side effects on your Exchange 2007 Client Access Server (CAS) could include Outlook 2007 clients not showing free/busy information properly in the scheduling assistant.
Your salvation lies with hotfix 952883.


That hotfix has now been superseeder and the link to the update hotfix has been moved to paid support
WSUS hasnt picked it up and windows updates doesnt seem to have found it either
Any ideas?
kb976814 is what i am after