Symptoms

K2 service is not starting
 

Diagnoses

We began troubleshooting by running the server in console mode, to see where the service failed on start. Based on the unknown (user couldn't exactly recall) error message, it seemed to have trouble reading the K2Hostserver.exe.config file.
 

Resolution

We checked for the k2hostserver.exe.config file and did not find it at the location specified by the error message. We did however find a K2hostserver.exe.config.backup file, which we renamed to k2hostserver.exe.config. We restarted the service after renaming the file and the service started normally.