cannot synchronize with the corporate address book.

Hi all,
We have OCS 2007 and we have few users that have Windows 7 Office2010 w/IE 7 or higher that are getting this error message for office communicataor.
"Cannot synchronize with the corporate address book.   This maybe because the proxy server setting in your web browser does not allow access to the address book.  If the problem persists, contact your system admin."

Any ideas why this maybe happening?  
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From a web browser on an internal client try to access the following webpage: where is your front-end server or pool FQDN.

Also try this URL (make sure to confirm that your sample file exists in this locaiton on the server.)

The first link should bring up a page using anonymous access, but the second link should prompt for authentication.

Also try adding the pool FQDN to the Trusted Sites list on those workstations in IE.

Is your issue resolved ?
annayegAuthor Commented:
yes, but it wasn't the solution above.

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