You don't experience these symptoms after you install the Exchange 2007 or Exchange 2010 versions of the MS13-061 security update.
The content index (CI) for mailbox databases shows "Failed" on the affected server.
The Microsoft Exchange Search Host Controller service is missing.
You see a new service that's named "Host Controller service for Exchange."
Workaround
To work around this problem, update the following registry entries.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Search Foundation for Exchange
Set the value of the DataDirectory registry entry to the Data directory path for the Exchange Server installation.
For example, if the Exchange Server installation directory is C:\Program Files\Microsoft\Exchange Server\V15, you would set the value of the DataDirectory registry entry to the following path:
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