# I keep seeing "Not Available for v45" I'm using FF ESR

**URL:** <https://discourse.mozilla.org/t/i-keep-seeing-not-available-for-v45-im-using-ff-esr/12934>\
**Category:** Add-on Support\
**Created:** [January 11, 2017, 4:13am UTC](https://discourse.mozilla.org/t/i-keep-seeing-not-available-for-v45-im-using-ff-esr/12934 "2017-01-11T04:13:35Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![fredmcd](https://avatars.discourse-cdn.com/v4/letter/f/71c47a/32.png) [@fredmcd](https://discourse.mozilla.org/u/fredmcd)\
**Post date:** [January 11, 2017, 4:13am UTC](https://discourse.mozilla.org/t/i-keep-seeing-not-available-for-v45-im-using-ff-esr/12934/1 "2017-01-11T04:13:35Z")

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Can I use those add-ons when I am on ESR?  
I don’t use the current Firefox (50) because I would lose  
some of my unsigned add-ons.

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**Author:** ![jorgev](https://avatars.discourse-cdn.com/v4/letter/j/71c47a/32.png) [@jorgev](https://discourse.mozilla.org/u/jorgev)\
**Post date:** [January 17, 2017, 11:25pm UTC](https://discourse.mozilla.org/t/i-keep-seeing-not-available-for-v45-im-using-ff-esr/12934/2 "2017-01-17T23:25:58Z")

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You might need to look into the All Versions page for an add-on and look for older versions that may be compatible with ESR.