The error
Job was rejected because the Compute Server feature is disabled
on a client machine is often coupled with the information
info : Compute Server Service not enabled - Distributed Worker service enabled
when the compute server is started. This is most likely caused when two license types are mixed into one. An example would be when the compute server license file is mixed with a client license file to read
# DO NOT EDIT THIS FILE except as noted
#
# License ID 123456
TYPE=NODE
VERSION=10
HOSTNAME=ip-123-45-67-89
HOSTID=abcd1234
CORES=8
CSENABLED=1
KEY=XXXKEY
CKEY=XXXCKEY
COMPUTESERVER=http://localhost:80
PASSWORD=XXXPASS
The last two lines of the above license file should not be part of the compute server license file but are rather used in a client license file. This may cause a wrong start-up of the compute server and ultimately result in the discussed error.