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Installed firefox beta version 84 and can't revert back to 83

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  • Last reply by FredMcD

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So I recently installed Firefox beta. It installed on top of main firefox. Now I am in beta version 84 but if i try to open regular firefox release version 83 it says running an old version will corrupt profile data. It just has an option to create a new profile, so i am asking if there is a way to import my settings from my original profile or make my original profile run on version 83 or should I just wait for version 84 to be released in main firefox.

So I recently installed Firefox beta. It installed on top of main firefox. Now I am in beta version 84 but if i try to open regular firefox release version 83 it says running an old version will corrupt profile data. It just has an option to create a new profile, so i am asking if there is a way to import my settings from my original profile or make my original profile run on version 83 or should I just wait for version 84 to be released in main firefox.

Chosen solution

After the above, use sync to share data between each profile. Note: Some data can not be shared between versions.

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We recommend: When using different types/versions of Firefox on one system, that you use a different profile for each one. This is because of compatibility issues.

Leave beta alone for a moment. Open the non-beta but use this command to create a new profile.

Usage: C:\PROGRA~1\MOZILL~1\firefox.exe [ options ... ] [URL]
      where options include:

-ProfileManager Start with ProfileManager.

https://developer.mozilla.org/en-US/docs/Mozilla/Command_Line_Options

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Chosen Solution

After the above, use sync to share data between each profile. Note: Some data can not be shared between versions.

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Thank you very much. Reverted without problems.

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Glad to help. Safe Surfing.