"Unable to find host server in file HOSTS or HOSTS file no found in expected location. (5193)"
Unable to find the network properly.
Step 1: Turn off all computers and router.
Turn on router
Turn on server
Start ServiceShop / Service2000 on the server.
Start all client machines.
All should be fine. If not recheck the server for firewall being turned on or off, it must be turned off.
If only 1 computer is affected, confirm Firewall is off.