
DejanD.41425 (Customer) asked a question.
While attempting to upgrade the OPP agent from 2.3.1 to 3.0.02 the install failed at the 85% mark and the error reads "Unable to activate the agent. error code: 3"
In previous upgrades this would be the part where the login prompt pops up and asks to connect the API. It does ask for the domain and proxy settings but never gets to load the login prompt.

Enter the entire FQDN, not just the subdomain and the install should complete. The prompt is wrong.