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Firefox 50.0.2 open new tab offen hangs,safemode too,refresh no go

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  • 1 has this problem
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  • Last reply by cor-el

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I feel like the New tab try fetch every site's thumbnail cause the hangs.All image up to date after hangs. But it's anoying. Can we change the New tab title behaviors.

I feel like the New tab try fetch every site's thumbnail cause the hangs.All image up to date after hangs. But it's anoying. Can we change the New tab title behaviors.

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You can 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