Forum Discussion

underqualified's avatar
Occasional Contributor
5 years ago

Testcomplete suddenly no longer recognizes Firefox

Hello everybody, I was executing my testcase today and it would not work, getting the error message that >The object "Sys.Browser("firefox")" does not exist.< Yesterday, everything worked fine. Ho...
  • tristaanogre's avatar
    5 years ago

    Verify a couple of things:


    1) Firefox IS actually running and present in the Task manager in Windows

    2) Firefox has not been updated recently.


    My guess is #2 happened.  I looked online and see that Firefox 72 was JUST released yesterday.  Currently, TestComplete only has patches available through Firefox 71 so, if you are running 72, it's probably not being recognized.   You will need to roll back the Firefox version until Smartbear makes a patch available.


    Best practice is to turn off automatic updates for browsers so that you have control of your environment.