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How can I re-install an older verision of Thunderbird - currently on T72 Beta 1 but no addons work. Older version don't work as the profile is now modified
Currently on T72 Beta 1 but many addons are disabled or will not install. I want to roll back to an older version T68 but when I install, I get an message that the profile has been altered and is only compatible with the newer version. Do I want to create a new profile which defeats the purpose of the rollback.
選ばれた解決策
See https://support.mozilla.org/kb/unable-launch-older-version-profile
Why are you running a beta anyway? These are intended for testing purposes, not for production.
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選ばれた解決策
See https://support.mozilla.org/kb/unable-launch-older-version-profile
Why are you running a beta anyway? These are intended for testing purposes, not for production.
Thank you for your response. I was on the beta channel and interested in new features but it has messed me up. Learnt my lesson but is there no way to roll this back now?
With Thunderbird 68, in the command line in the Thunderbird program directory, start with
thunderbird.exe -P --allow-downgrade
Dear Wayne It worked - thank you - but I seem to have lost all my address books. Any idea how I can recover them?
A last question - I would love to learn more about the programming and different possibilities. Could you point me to a website or resource that I can learn more about some of this instead of just dabbling (dangerously)?
Thanks again Shamit
この投稿は Wayne Mery により
Do Help > Troubleshooting > open profile folder. Shut down Thunderbird. find the xxxx.mab.bak files and remove the .bak extension.
For programming, see https://developer.thunderbird.net/the-basics/building-thunderbird
Wayne Mery said
With Thunderbird 68, in the command line in the Thunderbird program directory, start with thunderbird.exe -P --allow-downgrade
I don't know what the above message means. Are you saying I have to open a DOS-type command line instead of using Properties?
Can you give me step-by-step instructions to roll back version 68.3.1?
Yes that is what you need to do. Start a command prompt (type com in Windows search) and navigate to the Thunderbird program directory (use chdir or cd command) Then run the command that Wayne has indicated
Thank you for your help.
Do I do that before or after I install the previous version? And what previous version should I go back to which will not break ALL of my extensions?
Also, once I run that command on the command line, what am I going to see, and how do I know which profile to select? Will I see a list of profiles?
この投稿は Purebeads により
Install the previous version over the current version but don't launch Thunderbird when you finish the install. Launch Thunderbird from the command line - the -P argument launches the profile manager, and the --allow-downgrade allows you to roll back to the previous version of Thunderbird.
Now that's the information I need! I don't suppose you know which version I should install to use my old extensions, and where I can get it (somewhere on this site, I assume).
What you will seen in profile manager is something like https://support.mozilla.org/en-US/kb/using-multiple-profiles
You can always get the current version from the main website https://www.thunderbird.net/en-US/ (although currently slightly behind - don't worry about it)