An event ID 1080 message is logged in the System log every three seconds after you run the Set-ExchangeServer command to set the static domain controllers on an Exchange 2007 cluster node

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SYMPTOMS

After you run the Set-ExchangeServer command to set or exclude a static domain controller, a global domain controller, or a configuration domain controller on a Microsoft Exchange Server 2007 cluster node, the following error message is logged in the System log every three seconds:

Event Type: Error
Event Source: ClusSvc
Event Category: Database Mgr
Event ID: 1080
Date: 1/14/2008
Time: 5:39:42 PM
Description: Cluster service could not write to a file (C:\DOCUME~1\CLUSAD~1\LOCALS~1\Temp\CLS1627.tmp). The disk may be low on disk space, or some other serious condition exists.

The syntax of the Set-ExchangeServer command resembles the following.

Set-ExchangeServer cluster_mailbox_server_name -staticExcludedDomainControllers domain_controller_name 
-staticDomainControllers 
-staticGlobalCatalogs 
-id  
-staticConfigDomainController

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CAUSE

This problem occurs because the Instance0 registry subkey is removed from the following subkey:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\MSExchange ADAccess

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RESOLUTION

A fix for this issue has been released in Update Rollup 2 for Exchange Server 2007 SP1 (KB948016). Apply Update Rollup 2 for Exchange Server 2007 SP1 (KB948016) or a later update to resolve this issue.

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