Installation of component VCSServiceManager failed with error code ‘1603’. Check the logs for more details.

I was deploying a vCenter 6.x with a separate Platform Service Controller and a database, installation was not successful due to the below error messages. In the middle of the installation it gave me an error message saying “An error occurred while starting the service ‘invsvc'” and rolled back the installation at the end. I was spending few hours to find a solution, directly I was not able find any issues with the system.

 
At the end gave me the below error message
 

I was so frustrated and started to find a solution in the internet. There were few blog posts and couple of VMware KB articles similar to the error message and I did all the workarounds and non of them worked. Few of them asked to install the .Net framework 3.5, set the database permissions to sysadmin and dbowner etc. I tried all of them and I was not able find a solution to my problem.

I checked the installation error log  (vminst) and found the below errors in the log

I tested the ODBC connection to the Database server and it was successful and I was able to connect to the database without an issue. In my domain environment forward and reverse lookup zones were working fine and I added the database instance with the “servername/sqlinstance” format. I changed the SQL server instance to “IP_address/sqlinstance” format as shown in the below screen capture and re-run the installation, I was surprised and it was successful without an issue at this time.
It was a simple change but had to spend my entire morning half to find the solution. So I thought to write this blog post and hope someone will find this as useful.

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