Backups hit closed-file errors on some files
Backups log 'Cannot access a closed file' errors on some files, especially when a secondary destination is set.
Tier II · Emerging Problems that are still building up.
7 public reports · first reported 9 September 2026 · last reported 10 September 2026
What's going wrong
Duplicati backups on Windows report a closed-file error on a subset of files, sometimes hundreds out of tens of thousands.
AI-assisted: written with the help of AI from the reports. The idea report has the full summary.
In the idea report
- The full summary.
- The products the 7 reports are about, and how many came each month.
- Related problems.
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