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Why does Firefox keep defaulting to its own settings?

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Every few days now, I open my browser to find a black screen and I have to reset all my own preferences again, untick 'highlights' and 'tips' re-tick restore previous session/top sites - everything. I've uninstalled firefox and reinstalled it, removed the user data files and cache but it won't stop doing it - it's exasperating. Is there something I haven't ticked or unticked that is making this do this all the time please? I'm not a techy, so be gentle...

Every few days now, I open my browser to find a black screen and I have to reset all my own preferences again, untick 'highlights' and 'tips' re-tick restore previous session/top sites - everything. I've uninstalled firefox and reinstalled it, removed the user data files and cache but it won't stop doing it - it's exasperating. Is there something I haven't ticked or unticked that is making this do this all the time please? I'm not a techy, so be gentle...
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Chosen solution

Thank you Tyler. I will do that and wait a few days to see if it does it again.

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Additional System Details

Installed Plug-ins

  • Shockwave Flash 32.0 r0

Application

  • User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:67.0) Gecko/20100101 Firefox/67.0

More Information

Tyler Downer
  • Top 25 Contributor
  • Moderator
1525 solutions 10621 answers

Helpful Reply

Please update to Firefox 68, and let me know if you still see this issue.

Please update to Firefox 68, and let me know if you still see this issue.
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Chosen Solution

Thank you Tyler. I will do that and wait a few days to see if it does it again.

Thank you Tyler. I will do that and wait a few days to see if it does it again.
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cor-el
  • Top 10 Contributor
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17346 solutions 156790 answers

Helpful Reply

If you lost personal data then it is possible that a new default-release profile folder has been created. See "Determine if Firefox has created a new profile":

You can open the about:profiles page via the location bar to check whether multiple profiles are present and what profile Firefox currently is using.


If you lost personal data then it is possible that a new default-release profile folder has been created. See "Determine if Firefox has created a new profile": *https://support.mozilla.org/en-US/kb/recover-lost-or-missing-bookmarks You can open the <b>about:profiles</b> page via the location bar to check whether multiple profiles are present and what profile Firefox currently is using. *Do NOT click any Remove button on this page. *https://support.mozilla.org/en-US/kb/profile-manager-create-and-remove-firefox-profiles ---- *https://support.mozilla.org/en-US/kb/dedicated-profiles-firefox-installation
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Question owner

Thank you Cor-el. I shall wait and see if Tyler's suggestion works but if not, I shall do as you suggest.

Thank you Cor-el. I shall wait and see if Tyler's suggestion works but if not, I shall do as you suggest.
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