Origin basic auth and custom headers break file fetches
Custom request headers and basic-auth origins make file fetches fail with 403 errors or header value exceptions.
Tier II · Emerging Problems that are still building up.
3 public reports · first reported 6 March 2024 · last reported 14 August 2025
What's going wrong
Sites whose origin is behind basic authentication get 403 errors when fetching files, even though the same URL works in a browser, and a custom user agent header fixes it.
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 3 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.