Symptoms

You may run into situations when it is necessary for you to register K2 blackpearl service manually. For example in certain scenarios when K2 Setup Manager repair operation went with error (e.g. because of I/O errors or access errors to necessary files) you may see K2 blackpearl service not registered automatically in the list of services.
 

Diagnoses

You can register K2 blackpearl service manually using sc command. Example:

sc create "K2 blackpearl Server" binPath= "C:Program Files (x86)K2 blackpearlHost ServerBinK2HostServer.exe /S" DisplayName= "K2 blackpearl Server"

You have to make sure to specify appropriate service account after you registered K2 service, by means of editing service properties in GUI.

Refer to the Microsoft documentation on how to use SC utility:
https://technet.microsoft.com/en-us/library/bb490995.aspx

Alternatively you can do the same in PowerShell using New-Service commandlet (available starting from PowerShell 3.0). Refer to the Microsoft documentation for details:
https://technet.microsoft.com/en-us/library/hh849830.aspx
 

Resolution

You can use SC command to register K2 blackpearl service manually. See details above.