Oracle DB expdp ORA-39071: Value for SCHEMAS is badly formed solved

If you receive this error ORA-39071: Value for SCHEMAS is badly formed, you can get rid of it by logging in with the schema that you want to export.
Example: Let's say you want to export schema test with the password 1234. You can write:
expdp test/1234
The value for SCHEMAS will be by default test and you will not receive ORA-39071 anymore.

Windows check if another's computer/machine port is open

If you want to see if antoher's computer/machine port is accesible from your Windows computer/machine type:
telnet <full_machine_name_or_ip> <port>

Example (scenario: test if the default port for Remote Desktop Connection on test_comp computer is open for your computer/machine ):
telnet test_comp 3389