PyPI Blog: Incident File Hosting Errors

PyPI experienced intermittent 502 and 503 errors on files.pythonhosted.org for two weeks in August 2026, traced to a misconfigured Fastly cache node that returned 502 responses. The issue was resolved by correcting the node’s routing and fixing Fastly configuration bugs related to origin fallback and range requests, restoring full download functionality by August 28.