32-bit ODBC DSN for vSphere

When you get around to installing vSphere,  if on a 64-bit Windows host in x86 compatibility mode, a 32-bit DSN is required for the database connection.

If a DSN has been set up through Start > Administrative Tools > Data Sources (ODBC) the vSphere installer won’t be able to use this DSN.

The 64-bit ODBC Administrator tool can be invoked from Control Panel to manage user DSNs and system DSNs that are used by 64-bit processes, but for 32-bit data sources, the 32-bit ODBC Administrator tool is used for Windows on Windows 64 (WOW64) processes.

To set up a 32-bit DSN launch the 32-bit version of the Data Source Administrator

It is located at:

The vSphere installer will then be able to detect the DSN and continue the installation.

Please see the Microsoft KB article https://support.microsoft.com/default.aspx/kb/942976/en-us for more information.

If you get the error: DSN is pointing to an unsupported ODBC driver then see KB article: https://kb.vmware.com/kb/1015804

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4 thoughts on “32-bit ODBC DSN for vSphere”

  1. Looking at the supported OS for VC srv, 64 bit is not supported. I guess you could run VC svr on 2008 64 bit in capatibility mode but I am wondering why you would do so? Is 2008 64 bit in capatibility mode that much faster than 2008 32 bit?


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