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Join the AMA (Ask Me Anything) with the Firefox leadership team to celebrate Firefox 20th anniversary and discuss Firefox’s future on Mozilla Connect. Mark your calendar on Thursday, November 14, 18:00 - 20:00 UTC!

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Firefox
Performance and connectivity

Performance and connectivity

Deal with error messages, crashing applications, connectivity issues, and slow performance.

Detecció de portal cautiu

Pàgina que descriu com Firefox detecta les xarxes amb portal cautiu.

Actualitzat per darrera vegada el: 31/10/23

In English

How to troubleshoot time related errors on secure websites

Connection settings in Firefox

How to troubleshoot security error codes on secure websites

What do the security warning codes mean?

Manage the devices linked to your Mozilla account

Firefox blocked by macOS 15 Sequoia firewall - What you need to know

How to let Firefox use the internet on your Windows computer

Resist Fingerprinting

Disable Firefox Sync

Firefox can't load websites but other browsers can

Using a Primary Password with Sync

Browsing history in Firefox - View the websites you have visited

Server Not Found - Troubleshoot connection problems

How to resolve weak crypto error messages on Firefox

Address screen sharing issues with Firefox on macOS 15 Sequoia

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Volunteer

Grow and share your expertise with others. Answer questions and improve our knowledge base.