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

Open a new tab doesn't work

more options

Yesterday the + tab would open a new tab when clicked. Today it doesn't. File New Tab doesn't work either. I am using OS X El Capitan. I really want to use FireFox as my browser -- it's much faster than Chrome. But I am not going to open a new window each time I want to start something new.

Yesterday the + tab would open a new tab when clicked. Today it doesn't. File New Tab doesn't work either. I am using OS X El Capitan. I really want to use FireFox as my browser -- it's much faster than Chrome. But I am not going to open a new window each time I want to start something new.

Chosen solution

Does the behaviour continue in Firefox's Safe Mode? https://support.mozilla.org/en-US/kb/troubleshoot-firefox-issues-using-safe-mode

If Yes, then we can rule out Themes, Extensions, and assorted settings. Next step is probably malware scans, but I don't know what scanners are good for Mac OS.

If No, then it's time to start weeding out Themes and Extensions 1-by-1 until the culprit is found.

Read this answer in context 👍 1

All Replies (1)

more options

Chosen Solution

Does the behaviour continue in Firefox's Safe Mode? https://support.mozilla.org/en-US/kb/troubleshoot-firefox-issues-using-safe-mode

If Yes, then we can rule out Themes, Extensions, and assorted settings. Next step is probably malware scans, but I don't know what scanners are good for Mac OS.

If No, then it's time to start weeding out Themes and Extensions 1-by-1 until the culprit is found.