AH setup log
20150615153303 E #05764 AHSETUP Caught an exception trying to connect to the database: Sql Error: Unspecified error (-2147467259)
20150615153630 I #04416 AHSETUP Trying to connect to database server 10.142.197.181\EPOSERVER, database ePO4_DCS-PRI-EPOSRV as user sa
20150615153724 E #04416 AHSETUP Connection failed
If you are using non standard port (different than 1433) like you say dynamic port then please use <server name>\<instance name>,<TCP port> (like 10.142.197.181\EPOSERVER,<xxxx>)
Please look at #: KB72204
in the correct format work
thanks four your advice!