title: R - when trying to install package: InternetOpenUrl failed
body: <p>Since I've updated both R (to 3.2.2) and RStudio (to 0.99.486) in Win 7, I'm experiencing problems downloading packages.</p>
  
  <p>I'm aware of the questions asked <a href="https://stackoverflow.com/questions/25599943/unable-to-install-packages-in-latest-version-of-rstudio-and-r-version-3-1-1">here</a> but neither</p>
  
  <pre><code>setInternet2(TRUE)
  </code></pre>
  
  <p>nor changing the CRAN mirror helped. The "Tools -> Global Options -> Packages -> "Use Internet Explorer library/proxy for HTTP" was also already unchecked and I made sure that my Firefox uses no proxy.</p>
  
  <p>I tried </p>
  
  <pre><code>setRepositories()
  </code></pre>
  
  <p>as well as manually installing the package with</p>
  
  <pre><code>install.packages('dplyr', repos='https://cran.uni-muenster.de/')
  </code></pre>
  
  <p>but I still get the message:</p>
  
  <pre><code>Warning in install.packages :
    InternetOpenUrl failed: 'Der Servername oder die Serveradresse konnte nicht verarbeitet werden.'
  Warning in install.packages :
    InternetOpenUrl failed: 'Der Servername oder die Serveradresse konnte nicht verarbeitet werden.'
  Warning in install.packages :
    unable to access index for repository https://R-Forge.R-project.org/src/contrib
  Warning in install.packages :
    InternetOpenUrl failed: 'Der Servername oder die Serveradresse konnte nicht verarbeitet werden.'
  Warning in install.packages :
    InternetOpenUrl failed: 'Der Servername oder die Serveradresse konnte nicht verarbeitet werden.'
  Warning in install.packages :
    unable to access index for repository https://cran.uni-muenster.de/src/contrib
  Installing package into ‘C:/Users/me/Documents/R/win-library/3.2’
  (as ‘lib’ is unspecified)
  Warning in install.packages :
    InternetOpenUrl failed: 'Der Servername oder die Serveradresse konnte nicht verarbeitet werden.'
  Warning in install.packages :
    InternetOpenUrl failed: 'Der Servername oder die Serveradresse konnte nicht verarbeitet werden.'
  Warning in install.packages :
    unable to access index for repository https://cran.uni-muenster.de/src/contrib
  Warning in install.packages :
    package ‘dplyr’ is not available (for R version 3.2.2)
  Warning in install.packages :
    InternetOpenUrl failed: 'Der Servername oder die Serveradresse konnte nicht verarbeitet werden.'
  Warning in install.packages :
    InternetOpenUrl failed: 'Der Servername oder die Serveradresse konnte nicht verarbeitet werden.'
  Warning in install.packages :
    unable to access index for repository https://cran.uni-muenster.de/bin/windows/contrib/3.2
  </code></pre>
  
  <p>Could anyone please help? Thank you!</p>