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If you're on Windows and use the built-in Windows Defender (or whatever it's called now), try excluding your Thunderbird mail folders from scanning. The AV lock

by qzw 3y ago

If you're on Windows and use the built-in Windows Defender (or whatever it's called now), try excluding your Thunderbird mail folders from scanning. The AV locks the files while scanning and that freezes TB.

ziml77 3y ago
Or replace Defender with a faster AV product. Defender has always been massively impactful on file operations.
tlamponi 3y ago
No, I'm using Debian Linux (where it worked well >> 5 years or so) – still thanks for the tip.