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Firefox 81.0.2 - No File Explorer window

  • 8 replies
  • 1 has this problem
  • Last reply by NoRain

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Since a recent update (within the last couple weeks) I am no longer able to select file or folder locations. The file manager window doesn't show up, but the browser acts like it's open.

Screen recording of the issue can be found at the following link. It shows both upload and download attempts from a server on my local network.

I have tried disabling the adblocker, but get the same result. this happens on all sites

I recieved the 81.0.2 update this morning, and the problem remains

All Replies (8)

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Start Firefox in Safe Mode {web link}

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

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unfortunately, yes it still happens in safe mode.

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You can try these steps in case of issues with web pages:

You can reload web page(s) and bypass the cache to refresh possibly outdated or corrupted files.

  • hold down the Shift key and left-click the Reload button
  • press "Ctrl + F5" or press "Ctrl + Shift + R" (Windows,Linux)
  • press "Command + Shift + R" (Mac)

Clear the Cache and remove the Cookies for websites that cause problems via the "3-bar" Firefox menu button (Options/Preferences).

"Remove the Cookies" for websites that cause problems:

  • Options/Preferences -> Privacy & Security
    Cookies and Site Data: "Manage Data"

"Clear the Cache":

  • Options/Preferences -> Privacy & Security
    Cookies and Site Data -> Clear Data -> Cached Web Content: Clear

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 or userChrome.css is causing the problem.

  • switch to the DEFAULT theme: "3-bar" menu button or Tools -> Add-ons -> Themes
  • do NOT click the "Refresh Firefox" button on the Safe Mode start window
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Thanks for the suggestions, I'm running the default theme, and neither safe mode, nor clearing cookies/cache make a difference..

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Let’s do a full clean re-install;

Note: Firefox comes in three or more folders on all computers. They are;

Maintenance: (Programs Folder) <Windows Only> Firefox itself: (Programs Folder) And two folders in the profile of each user on the computer for each Firefox profile for that user.

If you remove the Firefox folder, the user profiles would not be affected.

Download Firefox For All languages And Systems {web link}

Save the file. Then Close Firefox.

Using your file browser, open the Programs Folder on your computer.

Windows: C:\Program Files C:\Program Files (x86) Note: Check Both Folders

Mac: Open the "Applications" folder.

Linux: Check your user manual. If you installed Firefox with the distro-based package manager, you should use the same way to uninstall it. See Install Firefox on Linux;

If you downloaded and installed the binary package from the Firefox download page, simply remove the folder Firefox in your home directory. ++++++++++++++++++++++++++++ Look for, and remove any Mozilla or Firefox program folders. Do not remove the Mozilla Thunderbird folder if there is one.

Do Not remove any profile folders.

After rebooting the computer, run a registry scanner if you have one. Then run the installer. +++++++++++++++++++++++++++ If there is a problem, start your Computer in safe mode and try again.

How to Start all Computers in Safe Mode; {web link} Free Online Encyclopedia

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it started working again today, and to my knowledge, the only thing that has changed was a new nvidia graphics driver...

Not sure what to list as the cause, but i guess it's resolved?

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As long as the problem is gone. Please flag your last post as Solved Problem as this can help others with similar problems.

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FredMcD said

As long as the problem is gone. Please flag your last post as Solved Problem as this can help others with similar problems.

Solving the problem without identifying a cause means that the problem is liable to re-occur.

Also: any fool off the street can "press the nuclear button", and re-install applications from scratch.