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Message Filters Not Logging (win10)

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  • Last reply by JoeRLuciano

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Why suddenly has Thunderbird stopped logging my messages that I filter manually even though I have logging enabled? It used to work just fine. It no longer logs ANY message filtering. I have not changed any settings. I depend on it especially to confirm that new filters I set are working properly. How can i fix this?

Why suddenly has Thunderbird stopped logging my messages that I filter manually even though I have logging enabled? It used to work just fine. It no longer logs ANY message filtering. I have not changed any settings. I depend on it especially to confirm that new filters I set are working properly. How can i fix this?
Attached screenshots

Modified by Wayne Mery

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What version at the time you wrote this on Dec 11? Please find filterlog.html in your profile directory for that account, and check the file size.

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I found the file "filterlog.html" and it is a minimal 1k size. It is only an html shell - no content. It was last updated 12/5/25. So, how do I fix Thunderbird not logging the filtering actions?

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shut down thunderbird and delete the file. then try again

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Thanks for the suggestion. Sorry to say that did not work. It just created a new file but is still not logging the filter actions. Is there anything else I should try?

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https://bugzilla.mozilla.org/show_bug.cgi?id=2001009 reports this for version 145. Are you using version 145 or 146?

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I am currently on v146.0.1. Updated a couple of days ago after problem started in hopes it would resolve it.

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Is your locale in Thunderbird set to Japanese?

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FYI I am in the U.S. using Windows 10 Pro. I can not find a "locale setting" in Thunderbird to verify, but it should not be "Japanese". Language is set to "U.S. English". So, I see I am not the only one with this problem. It appears to have possibly been introduced with the v145 update.

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