It is not recommended that you install the agent as the default Administrator account
It is recommended that you create a new dedicated user that is only used for running the agent.
you can configure the log on details as in the KB below.
Please note that you should take care of explicitly adding full control on the installation folder and all other disk resources that are used by the agent to said dedicated user.
The reason why the Administrator user is not working is related to the internal postgreSQL database used for metadata by the Agent.
Hi Asit Kumar,
This message does not indicate that an error has actually occurred within the service. It simply means that the Services snap-in has timed out.
Below article is for reference on different causes and resolution :