After investigation, I could determine that Thunderbird 128.11 under MacOS Sequoia 15.5 interferes with applications. EaseUS Todo Backup and McAfee often fail in their execution, but only whebThunderbird is active.

jarchamb — Thu, 08 Jan 2026 16:34:14 GMT

Re: After investigation, I could determine that Thunderbird 128.11 under MacOS Sequoia 15.5 interferes with applications. EaseUS Todo Backup and McAfee often fail in their execution, but only whebThunderbird is active.

wsm — Thu, 08 Jan 2026 16:33:55 GMT

We'd like to hear more about your problem. If you are still having a problem, please post at https://support.mozilla.org/en-US/questions/new/thunderbird where it will get quicker attention, because "discussion" in Connect is really just for discussion, not problem determination or support questions. Thanks

topic Re: After investigation, I could determine that Thunderbird 128.11 under MacOS Sequoia 15.5 interferes with applications. EaseUS Todo Backup and McAfee often fail in their execution, but only whebThunderbird is active. in Discussions

After investigation, I could determine that Thunderbird 128.11 under MacOS Sequoia 15.5 interferes with applications. EaseUS Todo Backup and McAfee often fail in their execution, but only whebThunderbird is active.

Re: After investigation, I could determine that Thunderbird 128.11 under MacOS Sequoia 15.5 interferes with applications. EaseUS Todo Backup and McAfee often fail in their execution, but only whebThunderbird is active.