I have update the cpf file with the following info (removed the cache.key file from my local cache instance)

[LicenseServers]
SERVER 4=7.7.7.4,4001

Getting "Licensed to:   License missing or unreadable. " in SMP.  Tried to run the following in Cache instance..
USER>Do $System.License.ShowServer()
 
Not connected to license server

 Next I shutdown Cache, put back the cache.key into my local instance and start. Then run the command again :
USER>d $SYSTEM.License.ShowServer()
 
Active license server at address = 7.7.7.4 port = 4001
USER>

 In the documentation it also mentioned quote " However, each Caché instance must have a local copy of the authorizing license key file installed " taken from https://docs.intersystems.com/latest/csp/docbook/DocBook.UI.Page.cls?KE…

Hi Eduard

 But for it to work, the Cache instance will need to have a license key in each server before the License Server to actually work. If without a cache.key, it will not work..Tested using "d $SYSTEM.OBJ.ShowServer()" command. Unless I test it wrongly.

Regards
Jimmy