Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

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

more options

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.
Iqhotyoshelwe imifanekiso ekwisikrini

Isisombulu esikhethiweyo

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

Funda le mpendulo kwimeko leyo 👍 0

All Replies (2)

more options

Isisombululo esiKhethiweyo

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

more options

Wow, Nightly should never take over your regular profile. Sounds like you are in a good place now.