After upgrading from Firefox 3.x to Firefox 5.0.1, all Add ons disappear and cannot be reinstalled. How do I correct this?

ALL extensions disappear and cannot be installed. No new extensions can be installed. It prevents all extension installation.

See these articles for some suggestions:
* https://support.mozilla.com/kb/Firefox+has+just+updated+tab+shows+each+time+you+start+Firefox
* https://support.mozilla.com/kb/How+to+set+the+home+page - Firefox supports multiple home pages separated by '|' symbols
* http://kb.mozillazine.org/Preferences_not_saved

Similar Messages

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    '''''thedanbot''''':
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  • After upgrading to OS 8.1.3 on iphone 5, suddenly all contacts have facetime and ring on both my ipad and iphone.  Went to Contacts and Facetime to Edit and delete, but no field to do so. How can I delete Facetime from all these contacts?

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    Hi Ingo 2711,
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    This just started this week.

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    Mozilla/5.0 (Windows; U; Windows NT 6.0; en-GB; rv:1.9.2.8) Gecko/20100722 Firefox/3.6.8 ( .NET CLR 3.5.30729; .NET4.0C)

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

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    Hello,
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    ''To exit the Firefox Safe Mode, just close Firefox and wait a few seconds before opening Firefox for normal use again.''
    ''When you figure out what's causing your issues, please let us know. It might help other users who have the same problem.''
    Thank you.

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