Thread: Failed to export Data on 64 bit - help please.
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Old 06-20-2021, 08:06 PM   #2
kovidgoyal
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Is your backup folder on a non NTFS formatted filesystem? That error indicates writing to one of the export files is failing.

You can always backup manually instead, as described here: https://manual.calibre-ebook.com/faq...backup-calibre
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