Diễn đàn hỗ trợ Firefox

1. Whenever I open Firefox for the first time since boot, it crashes, and I have to click on it a second time for a window to actually show up. Once it shows up, it's forgotten all about the previous session - none of my tabs re-open, the window opens up maximized.

2. Whenever I close the last open window, my previous tabs are completely forgotten. Checking task manager reveals that there are 10 or 11 Firefox processes that are still running.

• I have a second Windows 11 device that DOESN'T exhibit any of these issues and works correctly. Closing Firefox does not leave any running processes around.
• "Open previous windows and tabs" is enabled in options.
• "Firefox will: Remember history" is set in the History options.
• Both devices are running Firefox 137.0.2 64 bit.

Problematic PC specs: Edition Windows 11 Pro Version 24H2 Installed on ‎3/‎23/‎2025 OS build 26100.3476 <<< This is different! Experience Windows Feature Experience Pack 1000.26100.54.0 <<< This is different!

Working PC specs: Edition Windows 11 Pro Version 24H2 Installed on ‎3/‎4/‎2025 OS build 26100.3194 Experience Windows Feature Experience Pack 1000.26100.48.0

Could not get email via the usual Firefox. Always have used Firefox to get it. What happened ???

Then something called Moxilla came along. What's that? Why do I have to use Moxilla? I want Firefox. How is it related to Moxilla? Why did something change without my permission?

Thanks, Deanna Rose

Roboform doesn't show up in the toolbar and it doesn't pop up to suggest passwords. Video download helper doesn't show up in toolbar. This all started after the latest update. Thanks Bob

More recently, for the past few months maybe, I sometimes get a white menubar when Firefox is in the forefront. Clicking on it will restore the menubar.

Here's a pic

I am using the latest Mac OS, 15.4.1, and it happened with the previous version too.

Thanks for any help.

The iDrive backup app on my synology nas is accessed via a web browser over my local network using an ip address. It has a two step security setup. First to enter Synology credentials and then iDrive's. After entering the iDrive credentials, all I get is a spinning wheel. It is supposed to present a box to enter a validation code, sent to me by email (which I get). The box is never shown.

The process works in Chrome and Edge successfully. I contacted iDrive support and they told me that since it fails only in Firefox, that I should contact the browser vendor.

There is no error message.

I tried clearing my browser cache, restarting Firefox and my computer, none of which helped.

Please can you advise me?

Firefox 137.0.2 (64 bit). Windows 10 Home 22H2 Os Build 19045.5737.

I am trying to free up some disc space, so I ran Disk Cleanup, but no improvement.

It shows over 430MB Temporary Internet Files, all of which are under a padlock icon. The size just keeps on increasing from day to day.

How can I remove some or all these Temporary Internet Files and regain disc space?