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Issue When installing Sophos Control Center, installation fails and the following error from the Microsoft SQL Server Express 2005 installation program appears:
An instance with the same name is already installed on this computer. To proceed with SQL Server Setup, provide a unique instance name.
Cause Sophos Control Center does not support Microsoft SQL 2008; however, the server on which you are installing Sophos Control Center has a SOPHOS instance of Microsoft SQL 2008 installed. This may be because:
If you have PureMessage for Microsoft Exchange 3.1 installed
If you do not have PureMessage for Microsoft Exchange 3.1 installed
More information about how to remove an existing SQL instance can be found in this Microsoft knowledgebase article: http://msdn.microsoft.com/en-us/library/ms143412.aspx.
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