title: RStudio: Unable to establish connection with R session
body: <p>I have never experienced this before. But today whatever button i click in RStudio, i got the error message box.</p>
  
  <p><strong>Unable to establish connection with R session</strong></p>
  
  <p>I got this error message when I try to run code, save files, open new project, open files, install packages, clear workspace, <strong>run code in console</strong>. I uninstall and reinstall again. Also tried to remove Rstudio desktop state, the error will not go away. The same thing happen all over again. </p>
  
  <p>How do I get around this ?</p>