title: RStudio Connections Pane: PostgreSQL Unicode(x64) does not appear in the list anymore
body: <p>I'm using the Connections Pane in RStudio to connect to a PostgresSQL Database. A while ago, I started this post <a href="https://stackoverflow.com/questions/47431947/using-rstudio-connection-pane-to-connect-with-a-postgresql-database">Link</a> and finally managed to set it up.</p>
  
  <p>After installing my System new (Win10, R3.5.0, RStudio1.1.453), I tried to retrace my steps to set it up again, but couldn't do so. After opening the Connections Pane the only existing sources I see are "Livy" and "Spark". Postgres and all other connections are missing. </p>
  
  <p>What I tried so far is to install PostgresSQL on my Computer. I also installed the <code>RPostgres</code>, <code>odbc</code> and <code>DBI</code> Packages in the hope that the Postgres option would appear in the list agian, but to no end.</p>
  
  <p>There is this Troubleshooting <a href="https://support.rstudio.com/hc/en-us/articles/115011264307" rel="nofollow noreferrer">Post</a> on RStudio, but it didnt help me so far.</p>
  
  <p>Does anyone know how to solve this issue? Thanks :)</p>