# When "There is a process already using the admin port 4848", but it is not true

When you try to start Payara 5 / GlassFish with:

asadmin start-domain

    ...and you get the following error:



There is a process already using the admin port 4848 -- it could be another instance of Payara Server or Payara Micro.
Command start-domain failed.
    


although there is no running Java process and the port is not occupied, you hostname is probably not pingable:

ping $(hostname)


    output: Request timeout


    Solution: 


    Add the following line to the /etc/hosts file:


    127.0.0.1	[YOUR_NOT_PINGABLE_HOSTNAME]


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