An exception of type System.Management.Automation.CmdletInvocationException was thrown. Additional exception information: ErrorCode:SubStatus:Service running under Network Service account in workgroup environment is not supported.

This error occurred to me when I ran the product configuration wizard in the SharePoint 2013 Preview in the Standalone Mode. I found that is is because of the AppFabric running account.

Thus opening the SharePoint Management Shell and executing the following command resolved my issue.

psconfig.exe -cmd Configdb create SkipRegisterAsDistributedCacheHost