title: Excel VBA - Open URL in the current instance of Firefox
body: <p>I found a way to open a link:</p>
  
  <pre><code>Shell "C:\Users\...\Firefox.exe" &amp; " https://www.startpage.com", vbMaximizedFocus
  </code></pre>
  
  <p>The problem is that Excel tries to open this web page into a new instance of Firefox.
  How could I force Excel to open it in the current instance?</p>
  
  <p>Thank you</p>