Issue

Core server installation failed at "verifying IIS configurations".

Cause

Check the installation logs and find errors similar to the following:

2016-10-21 13:15:46 INFO: Executing command RepairWebSiteConfiguration         (SetupController.ExecuteNextCommand())

2016-10-21 13:15:46 INFO: Executing: msiexec.exe /fomus {B69C4A6F-116D-421B-9811-D31FC358CCE4} /quiet /lv+ "C:\Users\ADMINI~1\AppData\Local\Temp\1\LANDesk.Setup.WebSiteConfiguration.Repair.msi.log"         (Launcher.ExecuteXmlCommand())

2016-10-21 13:15:46 INFO: Notifying ProcessBegin: msiexec.exe         (Launcher.ExecuteXmlCommand())

2016-10-21 13:15:46 ERROR: Execution of RepairWebSiteConfiguration completed. Return code: 1622, State: Failure         (SetupController.ExecuteNextCommand())

This means that the installation process failed to create the "1" folder under "C:\Users\ADMINI~1\AppData\Local\Temp\" directory in this example.

Resolution

Manually create a folder named "1" in C:\Users\ADMINI~1\AppData\Local\Temp\ directory. Resume installation. Installation goes through this stage successfully.