Hello leoone, do you mean clicking on the new tab button does not work? What happens when you try to open a link in a new tab (right click on a link > Open in a new tab)?

New tab button will not load anything it just hangs. Right click a link and open in new tab does load the bookmark, but this is an extra step that was not required before. If I press Ctrl T for a new blank tab then do a search or select a bookmark the page does not load.

Start Firefox in Safe Mode to check if one of the extensions ("3-bar" menu button or Tools -> Add-ons -> Extensions) or if hardware acceleration is causing the problem.

• switch to the DEFAULT theme: "3-bar" menu button or Tools -> Add-ons -> Appearance
• do NOT click the "Refresh Firefox" button on the Safe Mode start window

• https://support.mozilla.org/en-US/kb/troubleshoot-firefox-issues-using-safe-mode
• https://support.mozilla.org/en-US/kb/troubleshoot-extensions-themes-to-fix-problems

Do you have the Mega extension?

smorele said

Start Firefox in Safe Mode to check if one of the extensions ("3-bar" menu button or Tools -> Add-ons -> Extensions) or if hardware acceleration is causing the problem.

• switch to the DEFAULT theme: "3-bar" menu button or Tools -> Add-ons -> Appearance
• do NOT click the "Refresh Firefox" button on the Safe Mode start window

• https://support.mozilla.org/en-US/kb/troubleshoot-firefox-issues-using-safe-mode
• https://support.mozilla.org/en-US/kb/troubleshoot-extensions-themes-to-fix-problems

This worked thank you. Disabled a few legacy extensions, New Tab is back to functioning as before.

cor-el said

Do you have the Mega extension?

Yes I did and it was one of three I disabled.

If you have tried all these and is still not working then you try the steps below-

1) Go to the root folder where Firefox is installed

 it is generally installed in C:\Program Files\Mozilla Firefox)

2) Right-click Firefox- properties-details tab and click on Remove properties and personal information-just click ok 3) now a new firefox - Copy.exe is created

  use the new one as your default browser

I hope this helps