title: Oracle SQL Developer IO error: The Network Adapter could not establish the connection - Windows 10 Pro
body: <p>I am unable to connect to anything. Posting this as a beginner in Oracle SQL Developer and getting this error:</p>
  <p><a href="https://i.stack.imgur.com/xq4tP.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/xq4tP.png" alt="enter image description here" /></a></p>
  <p>I can't find the Oracle service under Services:</p>
  <p><a href="https://i.stack.imgur.com/W3g0j.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/W3g0j.png" alt="enter image description here" /></a></p>
  <p>The listener is also not being recognised as an identified command, similarly for SQL*Plus. Because of this shortcomings I am unable to connect to the default DB and start.</p>
  <p>Please guide me step by step for this. The online guides have been no use to me so far.</p>