Symptoms
In Microsoft Outlook for Mac, the Office Address Book (OAB) is not updated for the Mac client base. Additionally, the IIS log of the OAB virtual directory displays error 2148074310: "EC_E_BAD_BINDINGS."
Cause
This error occurs because extended protection is enforced on the virtual directory.
Resolution
To fix this issue, install the updated Extended Protection script. To get the script, and for more information, see Exchange Server Support for Windows Extended Protection.
