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Thunderbird unresponsive receiving new mails since 128.0.1

christophl
christophl
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Hi community, I have browsed a bit in the web but haven't found a solution.

I'm a long-term Thunderbird user having this as my to-go-mail-client on every computer since almost 20 years and have always been happy with it. However since the last major update to 128.0.1 my Thunderbird has become very unresponsive whenever I start it or I receive an email.

I have 3 mail accounts in my Thunderbird set up. Two accounts are using POP, these seem to work as expected. The third account is a (company)-Google account that syncs mails via IMAP. Whenever I receive an email with this Google-account I see the blue loading bar at the bottom-right of the UI and this takes a while to load (even when receiving only one email), as long as this loads my Thunderbird is "Not responding". After approximately one minute I can read my new email and work as always (until a new mail comes in and it becomes unresponsive again). Needless to say that this is not very great for working productive and I hope to find a solution, so I don't have to get used to a new mail client.

Currently I'm on 128.1.1 on Windows 11, as said this issue started with the update to 128.0.1 some weeks ago.

Happy to provide more details or test some steps if someone has a helpful idea how to improve things

Hi community, I have browsed a bit in the web but haven't found a solution. I'm a long-term Thunderbird user having this as my to-go-mail-client on every computer since almost 20 years and have always been happy with it. However since the last major update to 128.0.1 my Thunderbird has become very unresponsive whenever I start it or I receive an email. I have 3 mail accounts in my Thunderbird set up. Two accounts are using POP, these seem to work as expected. The third account is a (company)-Google account that syncs mails via IMAP. Whenever I receive an email with this Google-account I see the blue loading bar at the bottom-right of the UI and this takes a while to load (even when receiving only one email), as long as this loads my Thunderbird is "Not responding". After approximately one minute I can read my new email and work as always (until a new mail comes in and it becomes unresponsive again). Needless to say that this is not very great for working productive and I hope to find a solution, so I don't have to get used to a new mail client. Currently I'm on 128.1.1 on Windows 11, as said this issue started with the update to 128.0.1 some weeks ago. Happy to provide more details or test some steps if someone has a helpful idea how to improve things

Chosen solution

Wanted to follow-up on that. I was about to switch to Betterbird as this became almost unusable, but then I found a solution browsing some forums:

Exlude Thunderbird from Windows defender:

Go to 'Virus & threat protection' -> 'Manage setting' -> 'Add or remove exclusions' -> 'Add an exlusion' -> 'Process' -> "thunderbird.exe"

Running a couple of tests and seems that it is now about as fast as it used to be without getting in the 'Not responding' state whenever I receive an email on that IMAP account.

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christophl
christophl Question owner
more options

Chosen Solution

Wanted to follow-up on that. I was about to switch to Betterbird as this became almost unusable, but then I found a solution browsing some forums:

Exlude Thunderbird from Windows defender:

Go to 'Virus & threat protection' -> 'Manage setting' -> 'Add or remove exclusions' -> 'Add an exlusion' -> 'Process' -> "thunderbird.exe"

Running a couple of tests and seems that it is now about as fast as it used to be without getting in the 'Not responding' state whenever I receive an email on that IMAP account.

Helpful?

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