# Extension for Firefox

**URL:** <https://boards.straightdope.com/t/extension-for-firefox/361246>\
**Category:** Factual Questions\
**Created:** [June 19, 2006, 3:10am UTC](https://boards.straightdope.com/t/extension-for-firefox/361246 "2006-06-19T03:10:04Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Thin\_Ice](https://avatars.discourse-cdn.com/v4/letter/t/aeb1de/32.png) [@Thin\_Ice](https://boards.straightdope.com/u/Thin_Ice)\
**Post date:** [June 19, 2006, 3:10am UTC](https://boards.straightdope.com/t/extension-for-firefox/361246/1 "2006-06-19T03:10:04Z")

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I’m trying to download and install an extension to my Firefox browser and I keep getting “Software installation is currently disabled. Click Edit Options…to enable it and try again.” message every time I click the Install Now button. When I click the Ed Op button the Options menu opens to the Content tab. Java is enabled, as is Javascript, and [addons.mozilla.org](http://addons.mozilla.org) and [update.mozilla.org](http://update.mozilla.org) are allowed to install software. I can download files from other sites so what am I overlooking?

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**Author:** ![Duckster](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/duckster/32/1244_2.png) [@Duckster](https://boards.straightdope.com/u/Duckster)\
**Post date:** [June 19, 2006, 4:48am UTC](https://boards.straightdope.com/t/extension-for-firefox/361246/2 "2006-06-19T04:48:38Z")

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> [@Thin Ice](#):
>
> I can download files from other sites so what am I overlooking?

Firefox extensions have their own download process. What is the URL of the extension you are attempting to download?

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**Author:** ![Nanoda](https://avatars.discourse-cdn.com/v4/letter/n/ce73a5/32.png) [@Nanoda](https://boards.straightdope.com/u/Nanoda)\
**Post date:** [June 19, 2006, 4:52am UTC](https://boards.straightdope.com/t/extension-for-firefox/361246/3 "2006-06-19T04:52:52Z")

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Have you had Firefox installed since before version 1.5? If so, [this link](http://kb.mozillazine.org/Unable_to_install_themes_or_extensions_(Firefox)) may help you. (requires setting option _xpinstall.enabled_ to true).

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**Author:** ![Thin\_Ice](https://avatars.discourse-cdn.com/v4/letter/t/aeb1de/32.png) [@Thin\_Ice](https://boards.straightdope.com/u/Thin_Ice)\
**Post date:** [June 19, 2006, 11:54am UTC](https://boards.straightdope.com/t/extension-for-firefox/361246/4 "2006-06-19T11:54:12Z")

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Thanks to both of you for your replies. Nanoda, the info you provided did the trick. I did update to 1.5 from an earlier version so that was the problem. Thanks again.