Default password of ABBSVsvc user in ABB CLS 4.1
What is the default password of ABBSVsvc user for Client License system 4.1 ?
If you mean the 800xAService account used for running all the services on the HMI, then there is no default password.
This is a secure account used ONLY for running services and access to the password should be restricted.
Sorry, there is no way to recover the password.