Article ID: 978517 - View products that this article applies to.
The Microsoft Exchange Information Store service stops responding on a Microsoft Exchange Server 2007 server. Therefore, clients cannot access to mailboxes which are located on the Exchange Server 2007 server. Additionally, If you monitor the RPC Averaged Latency of MSExchangeIS in Performance Monitor, you find that the value of the RPC Averaged Latency is very high and will not drop.
To resolve this problem, install the following update rollup:
(https://support.microsoft.com/kb/979784/ )Description of Update Rollup 3 for Exchange Server 2007 Service Pack 2
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
Article ID: 978517 - Last Review: March 18, 2010 - Revision: 1.0