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Random freezes, missing sound and display glitches usually trace back to one bad driver. Find and replace yours safely.Free scan · under a minuteA 301 redirect usually fails for one of five reasons: the rule is running in the wrong layer, the response lacks the intended Location header, the pattern does not match the requested URL, another rule creates a loop or a long chain, or a browser/CDN is serving a cached response. Diagnose the live HTTP response first, then correct the rule that actually answered the request.
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Use the workflow below to identify the failing hop, make the old URL point directly to its final canonical URL, clear stale caches, and verify the result in Search Console.
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HTTP status code 301 means “Moved Permanently.” The server (or an edge proxy) tells the client that the old resource now has a permanent URI, normally in a Location response header. A browser follows that header, and search crawlers use it as a strong relocation signal. Status 308 also indicates a permanent move; the practical distinction is that 308 preserves the request method, while 301 is commonly used for ordinary GET URL changes.
A redirect is working only when the first response to the old URL is the status you intended, its Location value resolves to the correct host, scheme, path and query string, and the complete hop sequence ends at a reachable final response. Seeing the new page in your browser is not enough: the browser may have cached an earlier redirect, JavaScript may be changing the URL, or a CDN may be answering before your origin server is reached.
- Correct first response: normally
301(or deliberately308), not a200,404or an HTML page that performs a client-side redirect. - Correct destination: the
Locationheader points to the intended canonical URL and does not drop or invent query parameters. - Finite path: the old URL reaches the final page in one direct hop whenever possible, without a loop or a needless chain.
- Consistent layers: CDN, reverse proxy, web server and application agree about HTTP versus HTTPS, host names, slashes and locale prefixes.
- Fresh verification: you test a response that is not an old browser or edge-cache result.
Start with the response, not the configuration file
Before editing a rule, capture the exact response returned for the failing URL. A command-line header client makes every hop visible and avoids assumptions based on what a browser displays.
Inspect the first hop
- Run
curl -sS -D - -o /dev/null 'http://example.com/old-path'. Replace the example URL with the exact old address, including its original scheme and query string. - Record the status line, every
Locationheader, theServeror cache headers, and any marker identifying the responding CDN or proxy. - Repeat the request with the other scheme or host only if those are part of the user-facing URL. Testing
http,https,wwwand the apex separately can expose a normalization conflict.
To display all hops in one run, use curl -sS -L -D - -o /dev/null 'http://example.com/old-path'. The output contains a header block for each response. Do not use a tool or browser mode that hides intermediate responses; the first status and first Location identify where the redirect begins.
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Check the complete chain
Follow each destination until the final response and write the sequence down, for example:
http://example.com/old --301--> https://www.example.com/intermediate --301--> https://example.com/final --200-->Look for these specific defects:
- A first response of
200: the redirect rule did not run, was shadowed, or was installed in a different virtual host or application route. - An empty or malformed
Location: the client cannot determine the destination, and Search Console may classify it as an empty redirect. - The same URL appearing twice: a circular redirect is in progress.
- Repeated HTTP/HTTPS or www/apex changes: two layers disagree about the canonical form.
- More hops than necessary: old URLs pass through intermediate locations instead of going directly to the final page.
- A final
4xxor5xx: the redirect may be syntactically correct but points to a destination that is unavailable or blocked.
A relative Location can be valid when it resolves unambiguously against the requested URL, but an explicit canonical target is easier to audit. Confirm the resolved host, scheme, path and query string rather than judging the header text alone.
Find which layer answered the request
A request can be handled by an application, Apache or NGINX, a reverse proxy, or a CDN edge rule. Editing a rule in one layer has no effect if an earlier layer has already returned a response. Cloudflare, for example, can generate a 301 at the edge without querying the origin server.
CDN or edge
Inspect response headers for cache indicators and provider-specific fields. Compare a normal public request with a request that bypasses the CDN or targets the origin directly (only from a trusted network and with the correct host header). If the edge returns the redirect while the origin returns 200, the edge rule owns the behavior. Change or remove that rule instead of adding another application redirect.
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Reverse proxy or load balancer
Proxy policies commonly enforce HTTPS, a preferred host, or a path prefix. Verify that the proxy forwards the original protocol to the application through the platform’s documented forwarding header. If the application believes every request is HTTP even after TLS termination, it may redirect HTTPS back to HTTPS indefinitely.
Apache or NGINX
Confirm that the edited virtual host, server block and included configuration file are the ones serving the hostname. Reload the service after a change and inspect its error and rewrite logs. Apache rewrite tracing can show which rule matched and why; enable detailed tracing temporarily, reproduce one request, then turn it off because verbose tracing is expensive.
Application router
Framework middleware can redirect before a route handler executes. Check locale, trailing-slash, authentication and canonical-host middleware, and compare behavior for an anonymous request. An application-level redirect should not fight a server-level rule for the same URL.
Fix the most common symptoms
| Observed result | Likely cause | Fix | Verify |
|---|---|---|---|
200 OK from the old URL |
Rule is not loaded, is in the wrong virtual host/location, or is shadowed by an earlier route. | Install one permanent server-side rule in the configuration that handles the request; remove conflicting application logic. | First response is 301 or intentional 308 with the expected Location. |
| Redirects to the wrong page | Host, scheme, path, slash or query-string construction is incorrect. | Use an explicit final canonical target and test representative query strings. | Every component of Location matches the mapping specification. |
| Browser reports “too many redirects” | HTTP/HTTPS, www/apex, slash, locale or proxy-origin rules toggle between forms. | Choose one owner for each normalization rule and stop redirecting an already-canonical URL. | Chain terminates after a finite number of hops with no repeated URL. |
| Several 301s before the page | Old mappings pass through intermediate URLs. | Collapse the mapping so the old URL points directly to the final destination. | One hop where practical; no unnecessary intermediate host or path. |
| Works at the origin but not publicly | CDN or proxy has a different rule or cached response. | Compare both layers, correct the edge policy and purge the relevant cache. | Fresh public request matches the corrected origin behavior. |
| Still appears broken after a fix | Browser, CDN or crawler cached the old 301. | Test from a fresh cache context, purge where possible and inspect the live headers. | New clients receive the corrected status and destination. |
Write a direct, exact mapping
The safest redirect expresses one old URL and one final URL. Avoid broad patterns unless every matched URL has the same destination. A broad rule can accidentally redirect an asset, an API endpoint or a new page that happens to share a prefix.
Apache examples
For a simple path move, Apache’s Redirect permanent syntax is clear:
Redirect permanent /old https://example.com/newFor pattern-based rewrites, use a condition and a substitution that cannot match the destination again:
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RewriteRule ^old/(.*)$ https://example.com/new/$1 [R=301,L]Place the rule in the active virtual host or the applicable directory configuration, and put it before a catch-all rewrite that sends every request to an application front controller. The L flag stops Apache’s current rewrite pass; it does not prevent a later layer from issuing another redirect, so retest the full chain.
NGINX examples
For one exact path, an explicit return is predictable:
location = /old { return 301 https://example.com/new; }For a path family, capture only the portion you intend to preserve:
rewrite ^/old/(.*)$ https://example.com/new/$1 permanent;NGINX evaluates the selected server block and locations according to its matching rules. A more specific location can bypass a regex or prefix block you edited, so verify the effective configuration and the hostname’s default server. Reload after validation, then request the old URL again.
Preserve or discard query strings deliberately
Decide what should happen to tracking parameters, pagination, filters and legacy parameters. A redirect that preserves all arguments may send obsolete controls to the new page; one that discards everything can break a useful product or campaign URL. Test at least one URL with no query, one with expected parameters and one with an unknown parameter. Confirm whether the final URL contains duplicates, encoded characters or a changed parameter order that affects your application.
Eliminate redirect loops
Loops usually arise when two systems each enforce a different “canonical” form. Common pairs include:
- HTTP at the edge to HTTPS at the origin, while the origin sees the proxied request as HTTP and redirects back to HTTPS.
- www to apex in one rule and apex to www in another.
- Trailing slash added by the application, then removed by the web server.
- Locale middleware adding a prefix that a CDN rule strips.
- A destination pattern that also matches the source pattern.
Choose one canonical policy for scheme, host, slash style and locale. Assign each policy to one layer, then make every other layer recognize the already-canonical form and pass it through. For TLS termination, configure the origin framework to trust the proxy’s protocol signal according to its documentation; do not infer HTTPS solely from the socket between proxy and origin.
When debugging, compare the URL after each hop, not just the final browser address. The first rule that changes a canonical URL back to a prior form is the one to remove or narrow.
Collapse long chains
Suppose an old article moved from /news to /blog, then to /insights, and finally to /guides. Keeping all historical hops may work for a browser, but each hop consumes crawler requests and adds another opportunity for a timeout, loop or stale cache. Google warns that long redirect chains can negatively affect crawling.
Create a table of legacy URLs and their final destinations, then update every old source to point directly to the final URL. Keep only the rules needed for genuinely distinct historical addresses. After deployment, test the oldest URLs, not just the most recent intermediate address.
Deal with cached 301 responses
A 301 is cacheable, and Apache notes that browsers and search engines may cache it indefinitely. That persistence explains why a corrected configuration can appear ineffective in a browser tab that was opened before the fix.
- Test in a private window or a separate browser profile, and use a command-line request that does not share the browser cache.
- Inspect response headers for cache status, age and expiration information.
- Purge the specific CDN URL or cache key when the provider supports it. If the CDN cached a rule-generated redirect, purge the edge object as well as the page.
- Retest the origin and the public hostname separately. A correct origin response does not prove that every edge location has refreshed.
- Avoid changing the destination repeatedly while troubleshooting; each new permanent redirect can remain in clients’ caches.
Do not rely on deleting browser history alone. Search crawlers and intermediary caches have their own stored responses, so monitor fresh requests and allow recrawling after the live response is correct.
Understand Search Console redirect errors
Search Console’s redirect-error category includes too many redirects, empty redirects and circular redirects. These labels describe what Googlebot encountered, not necessarily what your current browser sees.
Too many redirects
Capture the chain from a fresh request and remove unnecessary hops. Check that every intermediate URL is reachable and that no host or scheme rule reverses an earlier decision.
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Inspect the first response for a missing, blank or malformed Location value. Correct the variable or template that constructs the target, then test a URL with the same path and parameters that Search Console reports.
Circular redirect
List each URL in order until one repeats. The repeated pair usually reveals conflicting canonicalization rules. Make the destination exempt from the source rule and retest both directions.
Google still displays the old URL
A 301 is a strong relocation signal, but indexing is processed separately. Use URL Inspection to confirm that Googlebot can fetch the old URL, follow the redirect and fetch the final page. Ensure the destination returns a valid response, is not blocked, and has consistent canonical signals. Google may continue showing the old address until it recrawls and updates its index.
Choose the implementation layer deliberately
| Layer | Strengths | Risks | Best use |
|---|---|---|---|
| Application | Can use database or business logic; easy to manage content-specific mappings. | Consumes application resources, may run after a conflicting server rule, and can be unavailable during outages. | Small sets of data-driven redirects that require application context. |
| Apache or NGINX | Runs before application code, supports exact path matching, and can be logged with the web server. | Syntax and rule order vary; a change may affect an entire virtual host. | Stable site-wide moves and canonical host or scheme policies. |
| CDN or edge | Redirects close to the visitor, can answer without contacting the origin, and handles large global rule sets. | Edge caches can preserve mistakes; behavior may differ from origin and debugging requires provider-specific logs. | Global redirects, domain migrations and traffic-saving normalization. |
| Reverse proxy or load balancer | Centralizes policies for multiple origins and services. | Protocol and host headers can be rewritten, causing loops if applications are not proxy-aware. | Multi-service deployments with one public canonical URL. |
Whichever layer you choose, require an observable status and Location, access to logs, a way to invalidate cached responses, exact path/query matching, and a direct hop to the final canonical URL.
A repeatable verification checklist
- Request the exact old URL, including its original scheme, host, path, case and query string.
- Confirm the first status is
301or an intentional308. - Confirm the first
Locationresolves to the intended canonical host, scheme and path. - Follow every hop and record status plus destination.
- Remove loops, empty destinations and unnecessary intermediate URLs.
- Identify whether the CDN, proxy, web server or application produced each response.
- Check rule order, active virtual host/server block and reload status.
- Test query-string behavior with representative and unknown parameters.
- Purge relevant edge caches and retest from a fresh client.
- Use URL Inspection or the applicable Search Console report to verify Googlebot can reach the final URL.
When to use 301 versus 308
Use 301 for a conventional permanent move of a web page when clients are expected to follow a GET redirect. Use 308 when preserving the HTTP method and request body is important, such as a permanent endpoint move that must keep a non-GET request unchanged. Whichever code you choose, make the destination explicit and test clients that matter to your service. Do not switch codes as a cache workaround; a cached permanent response can persist regardless of which permanent status you selected.
Final diagnosis
The reliable fix is procedural: inspect the first live response, trace every hop, identify the layer that answered, replace conflicting or overly broad rules with one direct mapping, purge stale caches, and verify the final URL in both an HTTP client and Search Console. If the old URL does not return the intended status and Location header, the redirect is not yet fixed—regardless of what a previously visited browser tab displays.
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