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i am log in with mozilla firefox account and my bookmark and passwords are gone

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Some problems in mozilla firefox so I reinstall mozilla firefox and i log in with my mozilla firefox account synchronization with my email But my data and bookmarks & save passwords Are gone my data is lost How to recovery my data bookmarks & save in mozilla firefox

Some problems in mozilla firefox so I reinstall mozilla firefox and i log in with my mozilla firefox account synchronization with my email But my data and bookmarks & save passwords Are gone my data is lost How to recovery my data bookmarks & save in mozilla firefox

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Hi akhlieshchauhan55, I'm sorry to hear about this problem.

Which kind of system has this problem? Windows, Mac, Linux, or Android?

Could you describe how you reinstalled? For example, did you simply download and run the Firefox installer, or did you first remove some files or uninstall Firefox? If you removed files, what files did you remove?