Thanks for the reply.
If you could move this string over to the revit forum it would be appreciated. I must have missed that forum somehow..
I will retry the %USERNAME% and see if it will work. It was the first way I tried it so I may have made a mistake.
As far as using the ini when creating the deployment it now works this way. Years ago (rel 16??)y ou had to go into the msi file rip theirs out and add yours now you simply add it here.
The ini file I posted is really stripped. These are just the things we change. It will append to default values. You can also setup different ini information depending on the discipline that is being used. It's really pretty slick for the deployment.
I believe if you are doing singles you can simply edit the revit.ini in the C:\ProgramData\autodesk\RVT 2021\UserDataCache folder. Edit that and then anytime you remove the ini file from the user folder that is where it will steal it from.