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How to really disable Thunderbird updates?

kz flag

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?

ar flag
How was Thunderbird installed? Is it a snap app or traditional "deb" install?
Erwan avatar
kz flag
@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.
user535733 avatar
cn flag
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.
Erwan avatar
kz flag
@user535733 thank you for the explanation, it's certainly what happened indeed.
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