# Unable to launch external preview error

**URL:** <https://forums.realmacsoftware.com/t/unable-to-launch-external-preview-error/44523>\
**Category:** RapidWeaver Elements\
**Created:** [September 4, 2024, 2:32pm UTC](https://forums.realmacsoftware.com/t/unable-to-launch-external-preview-error/44523 "2024-09-04T14:32:42Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![anon68150607](https://avatars.discourse-cdn.com/v4/letter/a/4bbf92/32.png) [@anon68150607](https://forums.realmacsoftware.com/u/anon68150607)\
**Post date:** [September 4, 2024, 2:32pm UTC](https://forums.realmacsoftware.com/t/unable-to-launch-external-preview-error/44523/1 "2024-09-04T14:32:42Z")

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Currently if you have \*.html files set to open by default in any other application other than a web browser, Elements throws the following error. Ideally, Elements should just launch using the default browser, or enable the user to chose which browser they would like to preview it in (similar to [Hype’s Preview dropdown button](https://tumult.com/hype/documentation/#the-tumult-hype-interface)).

 ![CleanShot 2024-09-04 at 10.26.37@2x](https://europe1.discourse-cdn.com/flex005/uploads/realmacsoftware1/original/3X/4/7/479d5d9df115c428b82154f7d4e11cd5278d0f58.jpeg)

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**Author:** ![dan](https://dub1.discourse-cdn.com/flex005/user_avatar/forums.realmacsoftware.com/dan/32/28516_2.png) [@dan](https://forums.realmacsoftware.com/u/dan)\
**Post date:** [September 4, 2024, 2:41pm UTC](https://forums.realmacsoftware.com/t/unable-to-launch-external-preview-error/44523/2 "2024-09-04T14:41:44Z")

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You can change the default browser in Preferences, under Publishing:

 ![CleanShot 2024-09-04 at 3 .38.21@2x](https://europe1.discourse-cdn.com/flex005/uploads/realmacsoftware1/original/3X/3/3/331594b0f44003c4161129ac8bbdba8328a86493.jpeg)

You can also press “command-option-p” to bring up a dialog for those ad-hoc checks in other browsers:

 ![CleanShot 2024-09-04 at 3 .39.53@2x](https://europe1.discourse-cdn.com/flex005/uploads/realmacsoftware1/original/3X/5/6/56c3c8af426e61a128a3d74dbca9bb38cd838a40.jpeg)

Hope that helps!