Argument 'BrowserInstance' must be 'Web browser instance'

[Dapta]

Hi

I have an issue where PAD at random gives me this error: Argument 'BrowserInstance' must be 'Web browser instance'

It can be both after either attaching to or starting a new browser.

But for this specific issue, it's just when I open the Chrome browser, navigate to a website and then I want PAD to click a button - and it's just about 50/50 whether I get this issue or not at this point.

PAD is executing unattended on a VM, and I have been wondering if it can be caused by a lack of resources? Is this a common error?

Does anybody know why this happens at random and what I can do to bulletproof this?

[MichaelAnnis]

Set up an on error action to reattach to the browser if an error occurs. 

[Dapta]

Hi @MichaelAnnis 

Thanks for your comment. I've tried that, and it usually bugs out as well, sadly.

It's hard to say, but maybe that solutions helps the error-rate up a bit from 50/50 to 40/60. None of my fail-safes has been bulletproof, as of now I'm having it close the browser, open a new instance and try the script again (which still fails).

I was hoping that there was something I've overseen in PAD - do you experience the same error commonly?

[RituT]

Hi, I had the similar issue while launching the New chrome browser instance and that got resolved after I have uninstalled and installed back the Microsoft power desktop extension. See if that works for you as well.

[Jimbotron3000]

Did you ever find a solution that works? This is happening to me constantly. Sometimes it hangs after opening the browser. With error handling set to continue on error after timeout, I then get the 'BrowserInstance must be Web browser instance' error.

[ryule]

Yeah I get this with IE and the Automation browser on my VM.....works just fine on my laptop....