Cannot connect to Debug Terminal in Unifi Controller

Written by James McDonald

March 4, 2022

TLDR; Try a Different Browser

If you click on a Unifi devices IP address in the Cloud Key or Unifi Controller or click on “Open terminal” under tools in the device pane it should open a browser based cli

I just tried to connect using Firefox 97.0.1 and got “Connection error”

But using both Microsoft Edge and Google Chrome it works.

I have also had this happen when there was outbound rules blocking other ports but it is a good idea to try and swap browsers to double check that this is not the issue.

Microsoft Edge Version 98.0.1108.62 (Official build) (64-bit)
Google Chrome Version 99.0.4844.51 (Official Build) (32-bit)

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