# Katalon is not working with Firefox version 63

**URL:** <https://forum.katalon.com/t/katalon-is-not-working-with-firefox-version-63/13956>\
**Category:** Miscellaneous\
**Created:** [October 26, 2018, 12:37pm UTC](https://forum.katalon.com/t/katalon-is-not-working-with-firefox-version-63/13956 "2018-10-26T12:37:06Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Leo\_Lowranse](https://avatars.discourse-cdn.com/v4/letter/l/b487fb/32.png) [@Leo\_Lowranse](https://forum.katalon.com/u/Leo_Lowranse)\
**Post date:** [October 26, 2018, 12:37pm UTC](https://forum.katalon.com/t/katalon-is-not-working-with-firefox-version-63/13956/1 "2018-10-26T12:37:06Z")

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The katalon scripts which were working earlier are now not executable with Firefox version 63.  
The browser opens and gets closed within milliseconds

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**Author:** ![albert.vu](https://dub1.discourse-cdn.com/katalon/user_avatar/forum.katalon.com/albert.vu/32/20595_2.png) [@albert.vu](https://forum.katalon.com/u/albert.vu)\
**Post date:** [August 8, 2022, 7:06am UTC](https://forum.katalon.com/t/katalon-is-not-working-with-firefox-version-63/13956/2 "2022-08-08T07:06:56Z")

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Archived on August 8, 2022, 7:06am UTC