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Firefox Nightly overtook regular profile, now it can not be used by regular Firefox

xerces9
xerces9
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To help test some bugs in Firefox I installed Nightly a while ago alongside the regular Firefox.

Today when starting Nightly, it used the profile I use in the normal release Firefox, for work mostly. I exited almost immediately, but when I try to run the profile with regular Firefox, I get a warning that I'm using an older version of Firefox. See attached screenshot.

Is there a way to recover the profile?

Current FF version I have is 90.0.2 on Windows 64 bit.

To help test some bugs in Firefox I installed Nightly a while ago alongside the regular Firefox. Today when starting Nightly, it used the profile I use in the normal release Firefox, for work mostly. I exited almost immediately, but when I try to run the profile with regular Firefox, I get a warning that I'm using an older version of Firefox. See attached screenshot. Is there a way to recover the profile? Current FF version I have is 90.0.2 on Windows 64 bit.
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Solución elegida

I started Firefox with the --allow-downgrade command line option and it seem to work. Will report back if anything new arises.

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xerces9
xerces9 Autor de la pregunta
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Solución elegida

I started Firefox with the --allow-downgrade command line option and it seem to work. Will report back if anything new arises.

jscher2000 - Support Volunteer
jscher2000 - Support Volunteer
  • Top 10 Contributor
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Wow, Nightly should never take over your regular profile. Sounds like you are in a good place now.