Error fix
How to fix “Next.js middleware redirect loop”
Middleware keeps issuing redirects—often auth checks on public paths that bounce forever.
Updated Apr 20, 2026
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Fastest fix
Start here first. Step 1 fixes most cases—then work down the list.
- Reproduce with the smallest URL/command and capture full stderr or response body.
- Confirm versions (runtime, CLI, framework) against official requirements.
- Compare with CI or a second machine to rule out local-only issues.
What this means
Middleware keeps issuing redirects—often auth checks on public paths that bounce forever. Use the steps below as a practical checklist—adapt commands to your OS and stack.
Common causes
Environment mismatch
Different Node/OS versions, missing env vars, or drift between local and deployed configs.
Bad inputs or timing
Race conditions, partial deploys, or hitting endpoints before dependencies are ready.
Step-by-step fix
Isolate and verify
- Reproduce with the smallest URL/command and capture full stderr or response body.
- Confirm versions (runtime, CLI, framework) against official requirements.
- Compare with CI or a second machine to rule out local-only issues.
Related
FAQ
- Is this tailored to my exact stack?
- These pages are structured guides. Swap in your package manager, paths, and hosting dashboard names.
- What should I paste into support?
- Full error text, timestamps, versions, and whether it reproduces in a clean profile or container.
- Can I share this page?
- Yes—each fix has a stable URL. Use “Copy fix link” on the page for teammates.
Fix related issues
Still stuck? Try these related fixes next.
- Axios network error (browser)Axios could not reach the server—no response object; often CORS, TLS, or offline.
- Service worker fetch failedA service worker intercepted a request and the network failed—offline, CORS, or bad SW scope.
- React hydration mismatchServer HTML and client render differ—often dates, random IDs, or browser-only APIs during SSR.
- NET::ERR_CERT_AUTHORITY_INVALIDThe browser does not trust the certificate chain—self-signed, wrong hostname, or missing intermediate.
- Mixed content (HTTPS page, HTTP resource)A secure page tried to load scripts, images, or XHR over insecure HTTP—browsers block or downgrade.
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Original error message
Middleware redirect loop