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Firefox won't save settings or...

Troubleshooting

Firefox won't save settings or remember information

In English

Setting Firefox as the default browser does not work - What to do

Recover lost or missing Bookmarks

How to fix preferences that won't save

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Changes to toolbars and window sizes are not saved

What to do if you can't download or save files

Firefox doesn't save web form entries

The thumbnails on the New Tab page are missing - how to get them back

Wrong home page opens when I start Firefox - How to fix

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