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Firefox will not open.

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  • 1 has this problem
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  • Last reply by user633449

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Opened yesterday. Safari opens. Software up to date. Running on a Mac with the latest Mac software

Opened yesterday. Safari opens. Software up to date. Running on a Mac with the latest Mac software

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Try to Create a Fresh Firefox profile, and see if it opens:

Profile Manager - Create, remove or switch Firefox profiles

Before doing that however, make sure you restart your Macbook, and also try to reinstall firefox.