Installing the rollup update 5 on a machine running Microsoft Exchange 2007 SP1 might cause your Outlook Web Access, OWA, to fail with error Outlook Web Access did not initialize
I have already experienced this error at 2 of my customers on fresh installations and I am surprised I didn’t find this error documented at Microsoft (Maybe I didn’t look hard enough)
The problem is that, for some weird reason, the installation of the rollup update 5 is removing the Exchange server from the Exchange Domain Servers group !
So if you are facing this issue simply find that group, add your exchange server account to it and restart your server. That should do it!
When installing Exchange 2007 SP1 in Cluster Continuous Replication (CCR) configuration. The setup of the passive node fails with the following error:
“This is not a passive node. A clustered mailbox server represented by the cluster resource group [clustername] was found on this node.”
I’ve found out that the reason for the problem is that upon finishing the Exchange Cluster installation on the active node the setup will ask you for a restart. Restarting the machine will cause the Windows cluster to failover to the passive node to be and thus causing the Exchange installation to fail on that node.
To solve this problem use the cluster manager to move back the cluster resources to the active node or simply restart the passive node to be and re-run the Exchange 2007 SP1 installation on failing node.
This solution was tested on Microsoft Windows 2008 and Microsoft Exchange 2007 SP1
Disclaimer: Guys if you happen to be suffering from “Event ID: 494” symptoms of you Microsoft Exchange 2003 server do not attempt anything before reading this article, I might save you a lot of time.
Level: I am assuming in the following that you already have good understanding of Microsoft Exchange 2003 operation and terminology, so this is for no newbies.
Symptoms: Typically a storage group will fail to mount and an error will be logged in the Application Log with an event id of 494. The error is the following
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