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I am unable to launch my profile that was from 74.0b6 to 73.0.1

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I did not know my older computer was running 74.0b6 and I saved the profile to move to my new computer. When I downloaded firefox on the new computer I have 73.0.1. Now the profile will not open. It says I am trying to move it to an older version. I cannot find the 74.0b6 to download.

I did not know my older computer was running 74.0b6 and I saved the profile to move to my new computer. When I downloaded firefox on the new computer I have 73.0.1. Now the profile will not open. It says I am trying to move it to an older version. I cannot find the 74.0b6 to download.

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Unless you want to run the beta version:

Please see the note at the end of the section "What happens to my profile if I downgrade to a previous version of Firefox?" in the following article:

Dedicated profiles per Firefox installation