We're calling on all EU-based Mozillians with iOS or iPadOS devices to help us monitor Apple’s new browser choice screens. Join the effort to hold Big Tech to account!

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Mij stipescams. Wy sille jo nea freegje in telefoannûmer te beljen, der in sms nei ta te stjoeren of persoanlike gegevens te dielen. Meld fertochte aktiviteit mei de opsje ‘Misbrûk melde’.

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Dizze konversaasje is argivearre. Stel in nije fraach as jo help nedich hawwe.

I have a 1-week old computer running Windows 10, and after loading Mozilla browser v54.0.1, I'm receiving the message "The update could not be installed. "

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  • Lêste antwurd fan mattcamp

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Full error message is "The update could not be installed. Please make sure there are no other copies of Firefox running on your computer, and then restart Firefox to try again."

Full error message is "The update could not be installed. Please make sure there are no other copies of Firefox running on your computer, and then restart Firefox to try again."

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Open Task Manager (or Activity Monitor, on a Mac) and make sure only one Firefox process is running.

If you see two of them, kill either of them and try again.