The vCenter Server system must have a 64-bit DSN. This requirement applies to all supported databases. By default, any DSN created on a 64-bit system is 64 bit.

If you use the data migration tool to migrate a SQL Server Express database located on the vCenter Server system to a new system, you do not need to create the 64-bit DSN. The data migration tool creates the DSN as part of the installation process. For other non-bundled databases, you must create a 64-bit DSN.


Install the 64-bit database ODBC drivers on your Microsoft Windows system.

The default installation location is C:\Program Files\VMware\Infrastructure\VirtualCenter Server.


Click Control Panel > Administrative Tools > Data Sources (ODBC).


Use the application to create a system DSN and test the connectivity.

The system now has a DSN that is compatible with vCenter Server. When the vCenter Server installer prompts you for a DSN, select the 64-bit DSN.