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!

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.

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

can't get to about.config to check on tls setting

  • 1 reply
  • 1 has this problem
  • 1 view
  • Last reply by James

more options

Trying to to check my TLS setting and need to disable 1.0 and 1.1 and enable 1.2 and 1.3 for a program to sync with my Quickbooks. When I type in about.config to get there...it tells me "can't connect to server"??

Trying to to check my TLS setting and need to disable 1.0 and 1.1 and enable 1.2 and 1.3 for a program to sync with my Quickbooks. When I type in about.config to get there...it tells me "can't connect to server"??

Chosen solution

It is about:config with a Colon : and not a period .

A useful about: url to remember is about:about as it lists all valid about: urls for that version including about:config

TLS 1.3 has been the max by default since Fx 60.0 release.

Read this answer in context 👍 0

All Replies (1)

more options

Chosen Solution

It is about:config with a Colon : and not a period .

A useful about: url to remember is about:about as it lists all valid about: urls for that version including about:config

TLS 1.3 has been the max by default since Fx 60.0 release.

Modified by James