How does Firefox 60 run in your environment?

I wonder if you meant to ask for help in the Firefox Enterprise section of the forum for specific environments? If so, I can move your question to the right category.

This request is for standard Firefox. The issue with Firefox 58+ is present on multiple OS and cloud platforms.

How can we go about troubleshooting the issue? It sits there in the background. Will not start or crash (can't find any crash logs).

We just tested on a fresh Windows 10 install, no previous Firefox install on the system and have the same issue.

has the firefox updater run before it went into the 2,5mb ram mode without any visible window?

(it just reminds me of a bug that I reported some time ago; that bug only happened to me using Nightly in the past though) https://bugzilla.mozilla.org/show_bug.cgi?id=1431916

Does it look like this to you? https://www.youtube.com/watch?v=KMlvBiykEH8

Try to create a new profile to test if your current profile is causing the problem.

See "Creating a profile":

• https://support.mozilla.org/en-US/kb/profile-manager-create-and-remove-firefox-profiles
• http://kb.mozillazine.org/Standard_diagnostic_-_Firefox#Profile_issues

If the new profile works then you can transfer files from a previously used profile to the new profile, but be cautious not to copy corrupted files to avoid carrying over problems.

• http://kb.mozillazine.org/Transferring_data_to_a_new_profile_-_Firefox

You can also try a clean reinstall and make sure to delete the Firefox program folder.

• https://www.mozilla.org/en-US/firefox/all/

Boot the computer in Windows Safe mode with network support to see if that has effect in case security software is causing problems.

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

@djfe That seems like slightly different behavior, but it is similar. For ours the update proceeds normally and seems to be successful, but then when starting Firefox after the successful update the process sits in the background using 2.5mb of Ram, kind of like in that video.

@cor-el Thanks for the suggestions. As mentioned above we have attempted clean installs and new profiles, even new installs of Windows. Safe-mode is however not an option as these machines are virtual with no console access.

What can we do to determine why Firefox is stuck in the background?

Thanks for the help so far.

Hi there,

What tools and logs can we use to determine what is stopping Firefox from completing it's startup?

I just found this folder: "C:\Users\username\AppData\Roaming\Mozilla\Firefox\Crash Reports" It probably contains memory dumps, that Firefox devs could take a look at.

Can you use utilities like these?

• https://docs.microsoft.com/en-us/sysinternals/downloads/process-explorer
• https://docs.microsoft.com/en-us/sysinternals/downloads/procmon

Crash Reports folder is empty except a "InstallTime" file that has a string of a dozen numbers.

Process Explorer isn't revealing anything interesting.

Procmon captures about 3600 Firefox events before it stops. No events afterwards. Can I upload this to you here?

procmon revealed to us that our AV wasn't uninstalling completely in our tests, and some of the configurations it made were blocking Firefox. The latest version of the Palo Alto Traps Agent fixes this known issue it has with Firefox.

Thanks for suggesting Procmon!