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How to downgrade?

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  • 0 have this problem
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  • Last reply by Lin

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What is the best way to downgrade from Thunderbird 146.0.1 to the most recent esr release (140.6.0esr?) I seem to recall reading that 146 featured some new data formats that may not be compatible with 140, but I don't find the specifics right now.

The reason I'm downgrading is bugs. I'm aware of the folder naming issue, which I dealt with. But I find a new (to me) bug where 146 will not play notification sounds. This occurs on two of the four (Windows 10 and 11) computers in my house.

What is the best way to downgrade from Thunderbird 146.0.1 to the most recent esr release (140.6.0esr?) I seem to recall reading that 146 featured some new data formats that may not be compatible with 140, but I don't find the specifics right now. The reason I'm downgrading is bugs. I'm aware of the folder naming issue, which I dealt with. But I find a new (to me) bug where 146 will not play notification sounds. This occurs on two of the four (Windows 10 and 11) computers in my house.

All Replies (6)

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Hi Lin,

I went from 145 to 140esr a month ago. All I did was delete compatibility.ini. I don't know if I should have done more. I have not had any problems.

I have looked a little and have not found mention of specific concerns when moving backward within the 14x versions.

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Thank you. Maybe I was thinking of Firefox, or some earlier major version jump. As long as I have a good copy of the profile I guess I have nothing to lose.

Here I go. Geronimo!

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Oh, yeah, back up first, of course. I should have said that too. Would you please report if you have problems?

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Did you install 140 right over 145, or did you uninstall 145 first?

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I did not uninstall. Didn't even think of it. I use a Macintosh. I'm not aware that Thunderbird stores anything other than the application file and profiles. I believe that it stores more files in different locations on Windows.

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I did it. Everything seems to work as expected. I have my notification sounds back. I did have to re-enter all my passwords. Thanks, again, for your help.

I see a couple of mentions of what I think is the same notification sounds bug, which doesn't appear to have been addressed yet. I should probably report it, but the Bugzilla process looks complicated and tedious. I just don't have the time for that right now.

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