Update Rollup 4-v2 for Exchange Server 2010 Service Pack 2 on nyt ladattavissa:
http://www.microsoft.com/en-us/download/details.aspx?id=34956

Update Rollup 4-v2 for Exchange Server 2010 Service Pack 2 resolves issues that were found in Exchange Server 2010 Service Pack 2 since the software was released. This update rollup is highly recommended for all Exchange Server 2010 Service Pack 2 customers.