# Selenium IDE add on

**URL:** <https://discourse.mozilla.org/t/selenium-ide-add-on/19256>\
**Category:** Add-on Support\
**Created:** [September 16, 2017, 6:59pm UTC](https://discourse.mozilla.org/t/selenium-ide-add-on/19256 "2017-09-16T18:59:10Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![manishs831](https://avatars.discourse-cdn.com/v4/letter/m/d6d6ee/32.png) [@manishs831](https://discourse.mozilla.org/u/manishs831)\
**Post date:** [September 16, 2017, 6:59pm UTC](https://discourse.mozilla.org/t/selenium-ide-add-on/19256/1 "2017-09-16T18:59:10Z")

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why selenium IDE 2.9.0.1 add on is not compatible with the latest browser of mozilla firefox.  
also many add ons like ad blocker is also not compatible now.why this issue is happening?

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**Author:** ![andreip](https://sea1.discourse-cdn.com/flex001/user_avatar/discourse.mozilla.org/andreip/32/24181_2.png) [@andreip](https://discourse.mozilla.org/u/andreip)\
**Post date:** [September 17, 2017, 5:24pm UTC](https://discourse.mozilla.org/t/selenium-ide-add-on/19256/2 "2017-09-17T17:24:12Z")

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Selenium removed support for FF. Ad blockers should work. Use uBlockOrigin. It is the best.

Selenium IDE works in Firefox ESR v52 which is still supported. It’s like an LTS.