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In Ubuntu 22.04, I want to stop Thunderbird from updating due to this bug which prevents access to MS 365 (needed for my professional email). I followed the instructions and downgraded Thunderbird to an older version, but it still updates automatically to the most recent version every day.

Yesterday I tried to follow this answer, using the about:config method to disable app.update.auto... But today it went back to the most recent version again, so this is not working.

I'm confused how these updates happen: are these regular updates from Ubuntu or specific to Thunderbird?

How can I disable Thunderbird updates?

Erwan
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    How was Thunderbird installed? Is it a snap app or traditional "deb" install? – user68186 Jan 30 '23 at 18:07
  • @user68186 Thank you, it was installed with the regular apt system, I'm going to try apt-mark hold as suggested in the link, maybe this is what I'm missing. I'm confused though, because I don't think Ubuntu asked me to do any update these past few days. – Erwan Jan 30 '23 at 20:40
  • Ubuntu does not ask you about all updates. The default setting is to install security updates without asking you (it's a setting -- you can change that). At least one recent Thunderbird update was a security update. – user535733 Jan 30 '23 at 21:03
  • @user535733 thank you for the explanation, it's certainly what happened indeed. – Erwan Jan 30 '23 at 21:17

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