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 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