Issue
K2 Five 5.5 Installer may stop while trying to start K2 Configuration Service.

Error Code
The following error is seen in InstallerTrace log:
StartService.Start: Unable to start service: System.InvalidOperationException: Cannot start service K2 Configuration Service on computer 'SA-LABSDLX'. ---> System.ComponentModel.Win32Exception: The service did not respond to the start or control request in a timely fashion
--- End of inner exception stack trace ---
at System.ServiceProcess.ServiceController.Start(String[] args)
at SourceCode.Install.Windows.Services.StartService(String sComputer, String sService, Int32 maxWaitTime, Int32 minWaitTime)
at SourceCode.Install.Package.Actions.Windows.StartService.Start(String serviceName)
When inspecting the Event log under Applications and Services Logs the following error is present:
Description: A .NET Core application failed.
Application: SourceCode.Configuration.Api.exe
Path: C:Program Files (x86)K2 blackpearlSourceCode.Configuration.ApiSourceCode.Configuration.Api.exe
Message: Failed to load the dll from [C:Program Files (x86)K2 blackpearlSourceCode.Configuration.Apihostfxr.dll], HRESULT: 0x800700C1
The library hostfxr.dll was found, but loading it from C:Program Files (x86)K2 blackpearlSourceCode.Configuration.Apihostfxr.dll failed
- Installing .NET Core prerequisites might help resolve this problem.
https://go.microsoft.com/fwlink/?linkid=798306
Resolution
Remove hostfxr.dll from [Install Dir]SourceCode.Configuration.ApiSourceCode.Configuration.Api.exe folder and rerun the Setup.exe will resolve the issue.