Article ID: 972702 - View products that this article applies to.
After you log on Microsoft Office Communicator Web Access 2007 R2, the presence information does not work for approximately 30 minutes.
This issue occurs if the registry entry
fipsalgorithmpolicyis set to 1 under the following registry subkey:
To resolve this issue, apply the following update:
For more information, click the following article number to view the article in the Microsoft Knowledge Base:
(http://support.microsoft.com/kb/970679/ )Description of the update package for Office Communications Server 2007 R2, Unified Communications Managed API 2.0 Core Redist 64-bit: July 2009