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I cannot open the "options" icon on the menu for Firefox. I have uninstalled and reinstalled firefox 50

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  • শেষ জবাব দ্বারা jscher2000 - Support Volunteer

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After reinstalling Firefox I still can't open Options from menu.

After reinstalling Firefox I still can't open Options from menu.

All Replies (7)

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How are you trying to open the options? What happens when you try?

Type about:preferences<enter> in the address bar.


Start Firefox in Safe Mode {web Link} by holding down the <Shift>
(Mac=Options)
key, and then starting Firefox. A small dialog should appear. Click Start In Safe Mode (not Refresh).

Is the problem still there?

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I have tried by using the tools/options and the three lines in the upper right hand corner. In either case nothing happens.

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Could you test in Firefox's Safe Mode? In Safe Mode, Firefox temporarily deactivates extensions, hardware acceleration, and some other advanced features to help you assess whether these are causing the problem.

If Firefox is not running: Hold down the Shift key when starting Firefox.

If Firefox is running: You can restart Firefox in Safe Mode using either:

  • "3-bar" menu button > "?" button > Restart with Add-ons Disabled
  • Help menu > Restart with Add-ons Disabled

and OK the restart.

Both scenarios: A small dialog should appear. Click "Start in Safe Mode" (not Refresh).

Any improvement?

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Did you do a clean reinstall and made sure to delete the Firefox program folder?

  • (32 bit Windows) "C:\Program Files\Mozilla Firefox\"
  • (64 bit Windows) "C:\Program Files (x86)\Mozilla Firefox\"

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

See "Creating a profile":

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.


You can copy files like these to the current Firefox profile folder to recover specific data.

  • bookmarks and history: places.sqlite
  • bookmark backups: JSON backups in the bookmarkbackups folder
  • SQLite files like cookies.sqlite (cookies) and formhistory.sqlite (saved form data)
  • logins.json and key3.db (decryption key) for Passwords saved in the Password Manager
  • cert8.db and possibly cert_override.txt for (intermediate) certificates stored in the Certificate Manager
  • persdict.dat for words you added to the spelling checker dictionary
  • permissions.sqlite for Permissions and possibly content-prefs.sqlite for other Site Preferences
  • sessionstore.js for open tabs and pinned tabs and tab groups
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I have done a Safe mode restart and the option choice now works but I have found another problem prior to the restart and it is still here. If i click on the Windows icon in the lower left of my tray it does not open!!!

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I did a massive cleaning of my laptop to try to speed it up and I guess I have created problems. However, the WIndows icon was working even after the cleanup that I did but now it is not.

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If you haven't already, one thing to try for a possibly damaged installation is the Windows "System File Checker" utility: Use the System File Checker tool to repair missing or corrupted system files -- scroll just past the Windows 8.1 screenshot to find the steps for Windows 10