Where did you install Firefox from? Help Mozilla uncover 3rd party websites that offer problematic Firefox installation by taking part in our campaign. There will be swag, and you'll be featured in our blog if you manage to report at least 10 valid reports!

This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Avatar for Username

Firefox for Enterprise Support

Popular Searches: Policies Customization extensions

Frequent Topics

Explore the knowledge base.

Deploy icon

Deploy

Manage updates, policies & customization icon

Manage updates, policies & customization

Release notes icon

Release notes

Explore icon

Explore

Featured Articles

Choosing a Firefox update channel

Choosing a Firefox update channel

How to choose between rapid release and extended support release (ESR).

Customizing Firefox Using policies.json

Customizing Firefox Using policies.json

Cross-platform policy support can be implemented using a JSON file called policies.json.

Setting Up Certificate Authorities (CAs) in Firefox

Setting Up Certificate Authorities (CAs) in Firefox

Learn how to set up certificate authorities in Firefox Enterprise.

Customizing Firefox Using AutoConfig

Customizing Firefox Using AutoConfig

How to use AutoConfig files to set and lock preferences that are not covered by Firefox policies.

Illustration of community

Join Our Community

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

Learn More