While running the SharePoint Product Configuration Wizard. Sometimes, we ran into below error.
This post will help you to resolve the above error.
So lets get straight down to resolution and cause of it.
Cause:This is due to the fact, previous installation failed in between and left the SharePoint_Config database in SQL Server.
Delete the SharePoint_Config database which was created by previous installation and Run the SharePoint Product Configuration Wizard again.
Happy SharePointing :)