I am attempting an In-Place upgrade from SQL Server 2016 (13.0.5201.2) to SQL Server 2019 RTM. I have uninstalled Microsoft SQL Server 2012 Native Client & Microsoft SQL Server 2014 Native Client. I also uninstalled SSMS 17.9 and no other SSMS is installed. I turned on the Windows Installer service, copied the SQL Server 2019 installation files to C root drive and restarted the server. When I run the installer the first error encountered is "Exception has been thrown by the target of an invocation.". If I click the OK button it resumes and encounters a 2nd error "The document specified by its root path '/Extension/Agent/AgentPreviousRegPath' does not exist in data store.". If I click OK button I encounter a 3rd error listed below.
Install_sql_engine_core_inst_Cpu64_Action : Sqlmsirc_NotifyFeatureStates_64
There was an error attempting to remove the configuration of the product which prevents any other action from occuring. The current configuration of the product is being cancelled as a result.
Next the Complete with failures window is displayed (See Below).
Database Engine Services -- FAILED
SQL Browser -- Succeeded
SQL Writer -- Succeeded
Integration Services -- Succeeded
SQL Client Connectivity SDK -- Succeeded
SQL Client Connectivity -- Succeeded
Setup Support Files -- Succeeded
My summary file -- Exit code (Decimal): -2146232828
Feature: Database Engine Services
Status: Failed
Component name: SQL Server Database Engine Services Instance Features
Component error code: 25012
Error description: There was an error attempting to remove the configuration of the product which prevents any other action
from occuring. The current configuration of the product is being cancelled as a result.
Component name: SQL Server Database Engine Services Instance Features
Component error code: 0x80131604
Error description: Exception has been thrown by the target of an invocation
Component name: SQL Server Database Engine Services Instance Features
Component error code: 0x84B20001
Error description: The document specified by its root path '/Extension/Agent/AgentPreviousRegPath' does not exist in data
store.