Error message when you try to install an Exchange service pack on a cluster node that is running Exchange Server 2003

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Microsoft has published a KB about an error when we are installing Service Pack on a cluster node.

This problem occurs if the name of the default mailbox store includes a comma (,) or another special character. For example, this behavior occurs if the display name of the default mailbox store resembles the following display name:

Get it here:;en-us;926759&sd=rss&spid=1773

Written by Anderson Patricio

Anderson Patricio is a Canadian Exchange Server MVP and MCSM (Solutions Master) and he contributes to the Microsoft Community with articles, tutorials, blog posts, forums and book reviews. He is a regular contributor at, and (Portuguese).