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Assume that you use Microsoft Lync Server Control Panel to set the global file transfer filter to Block all. In this situation, a Lync 2010 user can still send files that contain a file name of more than 58 characters.


To resolve this issue, install the following cumulative update:

2670352 Description of the cumulative update for Lync Server 2010: February 2012

More Information

For more information about how to change the global filter, visit the following Microsoft website: 

How to change the global file transfer filter

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