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Autodiscover stops working unless I do IISReset

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Last Modified: 2012-05-09
Out of Office prompts for a password and complains the server is not available.
If I run IISReset, then a Test-OutlookWebServices, everything works (with the exception of  When contacting https://remote.DOMAINNAME.com/Rpc received the error The server committed a protocol violation. Section=ResponseStatusLine). Ten minutes after the IISReset, it stops working until I run IISReset again. We are running SBS2008 with Exch 2007 SP2 UR2. I have read a number of articles on kernel mode authentication and our initial autodiscover problems were fixed when we followed (http://blogs.technet.com/essentialbusinessserver/archive/2009/03/20/outlook-presents-multiple-prompts-for-authentication-in-ebs.aspx) which had us disable kernel mode authentication. A lot of posts that I have read suggest that enabling KMA should fix it. Our IISReset issue seems to remain regardless of how this is set.
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Sr. Engineer - Windows Server/Virtualization
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This problem has been solved!
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