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My junk mail settings have stopped working. Can't mark or unmark Junk/not junk and nothing is getting moved.

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The Adaptive Junk mail filter seems to not filter any more. The things that used to be regularly marked as junk and moved out of the inbox are ignored and instead messages that are not junk, are marked, but still not moved. When I try to manually mark a message as junk, it just toggles the junk indicator back off. If I try and manually unmark something that isn't Junk it just gets marked as junk. The messages marked as junk are not being moved. This started about a month or so ago.

The Adaptive Junk mail filter seems to not filter any more. The things that used to be regularly marked as junk and moved out of the inbox are ignored and instead messages that are not junk, are marked, but still not moved. When I try to manually mark a message as junk, it just toggles the junk indicator back off. If I try and manually unmark something that isn't Junk it just gets marked as junk. The messages marked as junk are not being moved. This started about a month or so ago.

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To diagnose problems with Thunderbird, try one of the following:

  • Restart Thunderbird with add-ons disabled (Thunderbird Safe Mode). On the Help menu, click on "Restart with Add-ons Disabled". If Thunderbird works like normal, there is an Add-on or Theme interfering with normal operations. You will need to re-enable add-ons one at a time until you locate the offender.
  • Restart the operating system in safe mode with Networking. This loads only the very basics needed to start your computer while enabling an Internet connection. Click on your operating system for instructions on how to start in safe mode: Windows 10, Windows 8, Windows 7, Windows Vista, Windows XP, OSX
If safe mode for the operating system fixes the issue, there's other software in your computer that's causing problems. Possibilities include but not limited to: AV scanning, virus/malware, background downloads such as program updates.