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 Crashes when it opens explorer window

  • 8 replies
  • 1 has this problem
  • 12 views
  • Last reply by FredMcD

more options

Hi there!

I migrated to a new Computer (win 10 x64) where I installed firefox 78.0.1. But it keeps crashing whenever an "explorer" window is open within firefox. i.e. most of the time when a download is started and absolutely every time when I open an integrated explorer windows (e.g. when I try to export/import the bookmarks to html).

I already tried cleaning the installation (with built-in function) as well as deleting all add ons with no result. I even completely re-installed firefox (whilst deleting ALL firefox-data in the %appdata% directories. No result, it still crashes I then made a new "fresh" profile - still it crashes

BTW: there is never any "crash log" generated, it just stops working and firefox "disappears"

I already searched this database and found 2 similar problems, but one was solved by upgrading to windows 10 (which I already have) and one was solve by uninstalling a specific security software (which I don't have).

So I really don't know how to fix this - any ideas?

Thank you and kind regards

Hi there! I migrated to a new Computer (win 10 x64) where I installed firefox 78.0.1. But it keeps crashing whenever an "explorer" window is open within firefox. i.e. most of the time when a download is started and absolutely every time when I open an integrated explorer windows (e.g. when I try to export/import the bookmarks to html). I already tried cleaning the installation (with built-in function) as well as deleting all add ons with no result. I even completely re-installed firefox (whilst deleting ALL firefox-data in the %appdata% directories. No result, it still crashes I then made a new "fresh" profile - still it crashes BTW: there is never any "crash log" generated, it just stops working and firefox "disappears" I already searched this database and found 2 similar problems, but one was solved by upgrading to windows 10 (which I already have) and one was solve by uninstalling a specific security software (which I don't have). So I really don't know how to fix this - any ideas? Thank you and kind regards

All Replies (8)

more options

Start Firefox in Safe Mode {web link}

A small dialog should appear. Click Start In Safe Mode (not Refresh). Is the problem still there?

more options

FredMcD said

Start Firefox in Safe Mode {web link} A small dialog should appear. Click Start In Safe Mode (not Refresh). Is the problem still there?

Hi Fred and thank you for your answer.

Unfortunately, starting in safe mode does not solve the problem. It still crashes upon opening an explorer window (e.g. the export bookmarks to html)

I also updated the graphics driver and some other stuff, but nothing worked.

Modified by Hypopheralcus

more options

Start your Computer in safe mode with network support. Then start Firefox.
Try Secure websites. Is the problem still there?

http://encyclopedia2.thefreedictionary.com/Linux+Safe+Mode
Starting Any Computer In Safe Mode; Free Online Encyclopedia

more options

Hi Fred!

Thanks for the promp

FredMcD said

Start your Computer in safe mode with network support. Then start Firefox.

Hi Frank!

Thanks for your prompt reply. Indeed, starting Windows 10 in safe mode seems to solve the problem. Do you have any idea why? What's different in safe mode when it comes to explorer windows within firefox? Is there any symbolic link which might be broken?

more options

I rebooted back to normal mode and it again crashes upon opening the explorer menu in firefox....

more options

In most computers, there are several types of Safe Mode. The primary ones used most are;

  • Safe Mode: Only programs that came with the computer are started. No other programs will be started unless the user starts them.
  • Safe Mode with Networking: Same as above but the network drivers (internet) will also be running.

This is a way to test if one of the other programs on the computer is causing the issue.

more options

Hi Fred!

Thanks - I tried to randomly kill some applications. It seems, that my "multi-screen" software called "Ultramon" causes the trouble. When I disable it, it seems to no longer crash.

I'll see if the problem is really solved now or if it's just a coincidence. I'll let you (and the forum) know to help solving future similar problems

Meanwhile thanks a lot!

more options

Make sure you contact Ultramon support.