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Change FF browser from MS store version to download version

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  • 1 has this problem
  • 6 views
  • Last reply by cor-el

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I want replace firefox Windows Mozilla MSIX 1- 0 package browser from ms store with regular downloaded version but I do not want to lose all my settings.

How do I go about this?

Thank you!

I want replace firefox Windows Mozilla MSIX 1- 0 package browser from ms store with regular downloaded version but I do not want to lose all my settings. How do I go about this? Thank you!

All Replies (1)

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MSIX Firefox uses quite a different location for the profile folder than the official release. MSIX: C:\Users\xxx\AppData\Local\Packages\Mozilla.Firefox_xxxxxxxxxxxxx\LocalCache\Roaming\Mozilla\Firefox\Profiles Release: C:\Users\<user>\AppData\Roaming\Mozilla\Firefox\Profiles


You can copy certain files with Firefox closed from one profile folder to the current profile folder to transfer personal data. Note that best is to avoid restoring a full profile folder and only restore important files that are safe to restore/transfer.


  • bookmarks and history: places.sqlite
  • favicons: favicons.sqlite
  • bookmark backups: compressed .jsonlz4 JSON backups in the bookmarkbackups folder
  • cookies.sqlite for the Cookies
  • formhistory.sqlite for saved autocomplete Form Data
  • logins.json (encrypted logins) and key4.db (encryption key/primary password) for logins saved in the Password Manager
  • cert9.db for certificates stored in the Certificate Manager
  • persdict.dat for words added to the spell checker dictionary
  • permissions.sqlite for Permissions and possibly content-prefs.sqlite for other website specific data (Site Preferences)
  • sessionstore.jsonlz4 for open tabs and pinned tabs (see also the sessionstore-backups folder)