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nginx on Windows rejects certificate paths with backslashes

Windows nginx refuses to load certificate files when the config uses backslash paths, and the user blames a bug.

Tier II · Emerging Problems that are still building up.

6 public reports · first reported 4 October 2026 · last reported 4 October 2026

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

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What's going wrong

Administrators running nginx on Windows find that one certificate fails to load while others work, and the error mentions a failed file open.

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 6 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.