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Windows backups fail on shadow copy snapshot errors

Windows backups fail with shadow copy snapshot errors after a Canary update, and the WMIC provider is missing on some systems.

Tier II · Emerging Problems that are still building up.

9 public reports · first reported 29 August 2026 · last reported 31 August 2026

Idea report · $9 · No contacts · All sales final

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What's going wrong

After updating to a Canary build of Duplicati, several Windows users find that backups log snapshot failures.

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 9 reports are about, and how many came each month.
  • Related problems.

No business has been found with this problem yet, so the report has no contacts. All sales are final — no refunds. Pricing.