A Lync 2010 client cannot download the address book file by using a UNC path

Applies to: Lync 2010

Symptoms


A Microsoft Lync 2010 client cannot download the address book file by using a File URL format.

Note The File URL format is also known as a Universal Naming Convention (UNC) path.

Cause


This issue occurs because the early versions of Lync clients do not support UNC download paths. 

Resolution


To resolve this issue, install the following cumulative update:
2571543 Description of the cumulative update package for Lync 2010: July 2011


More Information


For more information about the new address book features in Lync Server 2010, visit the following Microsoft website:
For more information about the address book file download service in Office Communications Server 2007 R2, visit the following Microsoft website: