title: Why does Google Colab say I have too many sessions?
body: <p>I'm trying to run two notebooks on Google Colab but could only connect one notebook at a time to the virtual machine. There's a pop-up message saying &quot;Too many sessions. You have too many active sessions. Terminate an existing session to continue.&quot; when I click the &quot;connect&quot; button on the second notebook. Does anybody know why?</p>
  <p>Screenshot:</p>
  <p><a href="https://i.stack.imgur.com/5DWdH.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/5DWdH.png" alt="enter image description here" /></a></p>
  <p>Edit: I'm using Google Chrome on Windows 10</p>
  <p>Edit March 3, 2020: I ended up not using Colab that day, but I came back the next day and was able to run two Colab notebooks just fine. strange. I had this issue a couple of times since I posted this question, but the error disappeared the following day.</p>