EPM 2017.3 Core Server setup / installation is failing on the step "Configuring system settings"
Failed
Configuring system settings
On the target EPM 2017.3 Core Server a log file C:\ProgramData\LANDesk\Log\LANDesk.LANDesk.Common.RunMethod_%DATE%%TIME%.log reports
2018-02-26 15:38:12 INFO: Path to assembly: E:\LANDesk\ManagementSuite\.\Install Only Files\IdentityServerConfig.dll
2018-02-26 15:38:12 INFO: Class name: Setup
2018-02-26 15:38:12 INFO: Method name: ConfigureStandalone
2018-02-26 15:38:12 INFO: Arguments
2018-02-26 15:38:12 INFO: Searching assembly for types: IdentityServerConfig.Class1
2018-02-26 15:38:12 INFO: Does class: class1==setup
2018-02-26 15:38:12 INFO: Searching assembly for types: IdentityServerConfig.IdentityServerClient
2018-02-26 15:38:12 INFO: Does class: identityserverclient==setup
2018-02-26 15:38:12 INFO: Searching assembly for types: IdentityServerConfig.Setup
2018-02-26 15:38:12 INFO: Does class: setup==setup
2018-02-26 15:38:12 INFO: Found class?: True
2018-02-26 15:38:12 INFO: Try to run method: ConfigureStandalone
2018-02-26 15:38:12 INFO: Run method: ConfigureStandalone
2018-02-26 15:38:12 INFO: Run method with: 0 parameters
2018-02-26 15:38:12 ERROR: Error running method: ConfigureStandalone Message: Exception has been thrown by the target of an invocation.
2018-02-26 15:38:12 ERROR: Error running method: ConfigureStandalone Message: Configuration file tps.config does not have root <configuration> tag (C:\ProgramData\LANDESK\ServiceDesk\My.IdentityServer\tps.config line 2)
SOLUTION
On the Core Server modified a file C:\ProgramData\LANDESK\ServiceDesk\My.IdentityServer\tps.config -- changed the the tags to <configuration> and </configuration> from <Configuration> and </Configuration> and clicked on the button "Try again".
Setup completed the step "Configuring system settings" successfully and moved on to the next step.