A TsmUpgradeTibcoAdminServer exception like the following appears repeatedly in the tsm.log on a client machine (where no Administrator process is running).
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2017 Jul 12 09:27:55:849 GMT -07:00 tsm Error [] [TRA-002084] TsmUpgradeTibcoAdminServer exception: com.tibco.pof.entity.EntityNotFoundException: Could not find entity with name repos of class com.tibco.pof.admindomain.Product  at com.tibco.pof.admindomain.impl.MachineImpl.getProductByType(MachineImpl.java:247)  at com.tibco.tra.tsm.TSM.upgradeTIBCOAdminServer(TSM.java:4020)  at com.tibco.tra.tsm.TsmUpgradeTibcoAdminServer.run(TsmUpgradeTibcoAdminServer.java:31) 
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Remove the variable 

"domainname.TIBCO_ADMIN_DOMAIN_HOME" 

in the file $TIBCO_HOME/tra/domain/DomainHomes.properties 

Remove the variable 

TIBCO_ADMIN_HOME 

in the file $TIBCO_HOME/tra/domain/domainname/local.properties. 

Please contact TIBCO support if the solution doesn't work for you.