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Profile doesn't load when I downgrade from Quantum

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I've tried out Quantum and decided I didn't like it (it didn't support most of the addons that I use frequently and there wasn't a noticeable speed boost) so I tried to roll back to a pre-Quantum version (ver 47) but when I did, the newly loaded FF was a clean slate; all the addons, bookmarks, and open tabs were gone. They only came back when I re-installed FF Quantum. I still want to use a pre-Quantum Firefox. How do I do this?

I've tried out Quantum and decided I didn't like it (it didn't support most of the addons that I use frequently and there wasn't a noticeable speed boost) so I tried to roll back to a pre-Quantum version (ver 47) but when I did, the newly loaded FF was a clean slate; all the addons, bookmarks, and open tabs were gone. They only came back when I re-installed FF Quantum. I still want to use a pre-Quantum Firefox. How do I do this?

Chosen solution

Firefox does not support downgrades. And I don't recommend doing this with any release profile.

These are the risks https://support.mozilla.org/en-US/kb/risks-downgrading-older-version-shar...

I am sorry we could not be more helpful to your question.

Are there particular features that you need help changing that would prevent a downgrade?

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Additional System Details

Application

  • User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:46.0) Gecko/20100101 Firefox/46.0

More Information

guigs 1072 solutions 11697 answers

Chosen Solution

Firefox does not support downgrades. And I don't recommend doing this with any release profile.

These are the risks https://support.mozilla.org/en-US/kb/risks-downgrading-older-version-shar...

I am sorry we could not be more helpful to your question.

Are there particular features that you need help changing that would prevent a downgrade?

Firefox does not support downgrades. And I don't recommend doing this with any release profile. These are the risks [https://support.mozilla.org/en-US/kb/risks-downgrading-older-version-shared-profile?redirectlocale=en-US&redirectslug=risks-downgrading-older-version-firefox-shared-pro] I am sorry we could not be more helpful to your question. Are there particular features that you need help changing that would prevent a downgrade?