Firefox 53 and Alert recognition (including WaitAlert) - default multi-process mode issue

Question

Hello,&nbsp;I've just (accidentally) upgraded my Firefox from version 47 or 48 or so to 53. I have the latest patch for TestComplete 12.30 to work with this version of Firefox. But I am now having problems with alert elements (in JScript) that I wasn't having before - I can't seem to use them at all. I'm trying .Alert and WaitAlert where they worked before and not having any luck with object recognition.Is this a recognized issue with recent versions of Firefox? Have things changed?&nbsp;Thanks for any help.&nbsp;Alex

dganov · Accepted Answer

Hi Alex,
&nbsp;
I suppose you have Firefox multi-process mode enabled, which prevents some TestComplete features from working properly.
Please take a look at this Help article:
https://support.smartbear.com/testcomplete/docs/app-testing/web/general/preparing-browsers/firefox.html#Settings-disable-multiprocess-mode

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Firefox 53 and Alert recognition (including WaitAlert) - default multi-process mode issue

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