pgAdmin 4 v1.6 setting PostgreSQL Binary Path to a remote server to clear-up "The system cannot find the path specified." error
You are getting this error because when using EXPLAIN or pg_dump from pgAdmin, the program uses the utilities in its install directory $DIR/../runtime or C:\Program Files (x86)\pgAdmin 4\v1\runtime to execute these commands. You can put this location in the Postgresql binary path and continue with the operation.