Please update to the most recent version of Firefox:

• Update Firefox to the latest release

Fixed!!

 It was not a Firefox problem, but it was nearly the only application where I use the middle button.

The upgrade process changed the functionality of the middle button and assigned its middle click to open a pre-installed application :-( Cheers

JD

jdevora said

A few days ago, my computer upgraded to Windows 10 (without asking for a confirmation). After that, firefox doesn't open a new tab when click the middle button on a link, it just doesn't do anything. I checker browser.tabs.opentabfor.middleclick and middlemouse.openNewWindow and both are true. Any advise? Cheers JD Evora

Hi JD, the issue you had sounds a lot like mine. Like you both of those booleans are true, but a taskbar middle-click does nothing...

Your fix sounds promising, but I do not follow how you fixed it. Could you elaborate?

Thanks a lot!

Open your pointer control page and check the settings.

Hi FredMcD,

I am using Windows 10 on my desktop. When I go to Control Panel > Mouse...I do not see anything about the functionality of the middle button being assigned "to open a pre-installed application," as JD is talking about...

Could you help me find that setting? Thanks!

I do not know what software your system is using.

Microsoft Fix it Solution Center: troubleshooting software issues

https://support.microsoft.com

Ok, I am sorry. I am not sure I follow.

The software controlling my mouse is Windows 10 Home 64-bit?

Maybe I can approach my problem from a different angle. If I right-click on Firefox in the taskbar, a context menu appears.

"Close window" works. "Pin this program to taskbar" works. "Firefox" opens a new window.

There are three options that do not seem to work: "Open new tab", "Open new window", and "New private window."

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

• Switch to the DEFAULT theme: Firefox menu button/Tools > Add-ons > Appearance
• Do NOT click the Reset button on the Safe Mode start window

• https://support.mozilla.org/kb/Safe+Mode
• https://support.mozilla.org/kb/Troubleshooting+extensions+and+themes

Boot the computer in Windows Safe Mode with network support (press F8 on the boot screen) to see if that helps.

• http://www.bleepingcomputer.com/tutorials/how-to-start-windows-in-safe-mode/
• http://www.7tutorials.com/4-ways-boot-safe-mode-windows-10

Hi cor-el, I tried your suggestion but had no luck. I might resort to reinstalling Firefox altogether...