Microsoft KB Archive/811934

= Backup Does Not Work and Generates Event ID 8012 &quot;Backup Is Already Active&quot; =

Article ID: 811934

Article Last Modified on 2/28/2007

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APPLIES TO


 * Microsoft Windows 2000 Service Pack 3
 * Microsoft Windows 2000 Advanced Server
 * Microsoft Exchange 2000 Server Standard Edition

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SYMPTOMS
When you are running scheduled backups of services that store data in Enhanced Storage Engine (ESE) databases, such as Exchange 2000 Server storage groups, the Site Replication service, or Windows 2000 Active Directory, the following event might be recorded in the application event log:

Event Type: Error

Event Source: NTBackup

Event Category: None

Event ID: 8012

Description: The 'Microsoft Site Replication Service' returned 'Backup is already active. ' from a call to 'HrESEBackupSetup' additional data '-'



CAUSE
A previous instance of Windows 2000 Backup (Ntbackup.exe) is still running in the background. The previous instance of Ntbackup.exe has a connection open to the specified service, so a second instance cannot connect.



RESOLUTION
Use Task Manager to identify and stop any other instances of Ntbackup.exe that are not responding.



MORE INFORMATION
The Backup log files may contain information about the cause of the problem. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:

241162 How to Save Backup Report Logs to an Alternate Location

Keywords: kbprb KB811934

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