Windows 10 reached EOS (end of support) on October 14, 2025. If you are on Windows 10, see this article.

Avatar for Username

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

Firefox's security sandbox

  • 1 reply
  • 4 have this problem
  • 226 views
  • Last reply by TyDraniu

radar
radar

I have a warning underneath my bookmark ribbon that says, "The security sandbox is disabled. Your configuration is unsupported and less secure." What is the security sandbox and what configuration is needed so that it supports the security sandbox. What happens if this security sandbox is disabled while I'm running Firefox?

I'm running Firefox v146.0.1

I have a warning underneath my bookmark ribbon that says, "'''The security sandbox is disabled. Your configuration is unsupported and less secure.'''" What is the security sandbox and what configuration is needed so that it supports the security sandbox. What happens if this security sandbox is disabled while I'm running Firefox? I'm running Firefox v146.0.1

All Replies (1)

TyDraniu
TyDraniu
  • Top 10 Contributor

Check value of security.sandbox.content.level in about:config (it should be 8 or 9) and also existence of MOZ_DISABLE_CONTENT_SANDBOX environmental variable.

It is explained in bug 1967907.

Ask a question

You must log in to your account to reply to posts. Please start a new question, if you do not have an account yet.