Alternate way to access the 3 bar menu is Tools --> Options

I don't see it. It just takes me to 'Options' which is not the same as the items in the 3-Bar Menu. Example: I can't find the mouse-over, Red Exit Button. Looks like I'll hafta 'End Process Tree' to exit to keep my FF Windows and session.

Additional Info: When I mouse-over the the 3-Bar icon, it goes gray and a pop-up says, 'Open menu'. As originally, stated though, nothing happens when I click on it.

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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 is causing the problem.

• switch to the DEFAULT theme: "3-bar" menu button or Tools -> Add-ons -> Appearance
• do NOT click the "Refresh Firefox" button on the Safe Mode start window

• https://support.mozilla.org/en-US/kb/troubleshoot-firefox-issues-using-safe-mode
• https://support.mozilla.org/en-US/kb/troubleshoot-extensions-themes-to-fix-problems

(See message below this one.)

cor-el said

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 is causing the problem.

• switch to the DEFAULT theme: "3-bar" menu button or Tools -> Add-ons -> Appearance
• do NOT click the "Refresh Firefox" button on the Safe Mode start window

• https://support.mozilla.org/en-US/kb/troubleshoot-firefox-issues-using-safe-mode
• https://support.mozilla.org/en-US/kb/troubleshoot-extensions-themes-to-fix-problems

Will all my windows (the whole session) recover or will I be greeted with one FF window when I 'Restart without Extensions'?

I see 'Exit' under 'File' (upper-left). Is this the same as the Red Exit under the 3-Bar Menu or does it only close the current FF window?

Update: I have access to the Menu with some open browser windows, but not with most of them. I found that 'Control-Shift-Q' works, if I should not have Menu access at all.

I also notice I have Menu access on a Restore Screen after a crash.

Update Dec 25, 2017:

As I wait for an answer about "Does a FF Restart Without Extensions' recover all my browser windows and Tabs, as does 'Control-Shift-Q'?", I meanwhile, disabled all 3 Extensions I have, 'Control-Shift-Q' to close FF, started back up. Same problem some FF windows allow the 3-Bar Menu to work (and YouTube Full-screen), others do not (and I can't do Full-screen YouTube).

- Pj

Can not guarantee anything. But should not have a problem. But since have a problem anything can happen.

• https://support.mozilla.org/en-US/kb/export-firefox-bookmarks-to-backup-or-transfer
• https://support.mozilla.org/en-US/kb/back-and-restore-information-firefox-profiles

Safe Mode Test

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

In Firefox Safe mode these changes are effective:

• all extensions are disabled (about:addons)
• default theme is used (no persona)
• userChrome.css and userContent.css are ignored (chrome folder)
• default toolbar layout is used (file: localstore-safe.rdf)
• Javascript JIT compilers are disabled (prefs: javascript.options.*jit)
• hardware acceleration is disabled (Options > Advanced > General)
• plugins are not affected
• preferences are not affected

TEST

Please let us know if this solved your issue or if need further assistance.