Issue uninstalling old ArcGIS Enterprise and running Enterprise Builder

[tigerwoulds]

I am trying to install ArcGIS Enterprise 10.9.1 on a Windows AWS machine using Enterprise Builder. This machine previously had 10.8.1 installed manually without Enterprise Builder. 

I have followed this guidance here to uninstall all components of 10.8.1: How To: Perform a clean uninstallation of ArcGIS Enterprise base deployment components (esri.com)

When I try to run the Enterprise Builder installer I get this error:

The ArcGIS Server, Portal, Data Store and 2 Web Adaptors have been uninstalled and I verified there are no windows services running for any of those pieces. Any other common places to check for 'ghost' files?

[tigerwoulds · Accepted solution]

Solved by silently uninstalling the Data Store and Server pieces. That removed the remnants/ghost files and allowed me to proceed with the Enterprise Builder install. 

How To: Silently uninstall ArcGIS products (esri.com)