Too Many HTTP Redirects: 301 vs 302 Redirects for Troubleshooting Redirect Loops

Fix the loop first by finding the redirect chain. Then decide if each hop should be a 301 or a 302. A browser may show an error like ERR_TOO_MANY_REDIRECTS when it gets stuck bouncing between URLs [source: Google Help]. That means your site is playing ping pong with itself.

TLDR: A 301 redirect means “moved for good.” A 302 redirect means “moved for now.” Redirect loops happen when URL A sends users to URL B, then URL B sends them back to URL A. Example: after a site migration, a store saw 23% fewer product page visits because http://example.com redirected to https://www.example.com, which redirected back to http://example.com. Ouch.

What “too many redirects” really means

A redirect is a signpost.

It says, “This page is not here. Go there instead.”

That is fine once. Maybe twice. But when a browser gets sent around in circles, it gives up. It has better things to do. So do your users.

A loop can look like this:

• Page A sends visitors to Page B.
• Page B sends visitors back to Page A.
• The browser repeats this until it stops.
• The user sees an error page.
• Your traffic quietly leaks away.

Honestly, it feels like watching someone try to enter a shop through a door that opens into another locked door.

301 vs 302 redirects, in plain English

301 redirect: This says the move is permanent.

Use it when the old page is gone for good. Search engines usually transfer ranking signals to the new page over time. Browsers may also cache it. That can be helpful. It can also be annoying when the 301 was wrong.

302 redirect: This says the move is temporary.

Use it for short tests, promotions, login checks, or stock changes. It tells browsers and search engines, “Do not get too comfortable. The old URL may come back.”

Here is the simple version:

• Use 301 for permanent page moves.
• Use 302 for temporary page moves.
• Do not use either to patch a messy setup forever.

Why redirects can create loops

Most redirect loops are not dramatic. They are boring. That makes them worse.

They often come from small conflicts:

• One rule forces HTTPS.
• Another rule forces HTTP.
• One rule adds www.
• Another rule removes www.
• A plugin redirects old slugs.
• The server redirects the same slug again.
• A CDN has one rule.
• Your app has another.

That is how you get chaos from “just one tiny redirect.”

Common loop patterns include:

• http://site.com → https://site.com → http://site.com
• site.com → www.site.com → site.com
• /old-page → /new-page → /old-page
• /login → /account → /login

Why 301 redirects can make loops extra sticky

A bad 301 is like writing your mistake in marker.

Because 301 means permanent, browsers may cache it. So even after you fix the server, your browser might still follow the old cached redirect. It drives me crazy that one wrong rule can keep haunting tests five minutes later.

This is why troubleshooting a 301 loop can feel fake. You fix the rule. You refresh. The error stays. Then you question reality.

Try this:

• Test in a private window.
• Clear browser cache.
• Use a different browser.
• Use a command line tool like curl -I.
• Check from another network.

A cached 301 is not always the server’s current answer. Sometimes it is yesterday’s bad decision wearing a fresh hat.

Why 302 redirects can hide bad logic

A 302 is softer. It is temporary. That makes it safer during testing.

But it can still cause loops. It just may be less sticky in the browser.

Many login loops are caused by 302 redirects. For example:

• User visits /dashboard.
• Site sends user to /login.
• User is already logged in.
• Site sends user back to /dashboard.
• Session check fails again.
• Round and round they go.

This is common after cookie changes. It also happens when HTTPS settings are wrong. Secure cookies may not work if part of the site still thinks it is on HTTP.

How to troubleshoot a redirect loop

Start with the chain. Do not guess.

Use a redirect checker, browser dev tools, or this command:

curl -I -L https://example.com

The -I asks for headers. The -L follows redirects.

You want to see each hop. Look for the moment things repeat.

1. Check the first URL. Is it HTTP or HTTPS?
2. Check the host. Is it using www or not?
3. Check the status code. Is it 301 or 302?
4. Check the location header. Where does it send the browser?
5. Find the repeated URL. That is your loop.

HTTP status code 301 means moved permanently, while 302 means found or temporary depending on HTTP version wording [source: MDN].

Use this quick decision guide

Not sure which redirect to use? Use this:

• Changed a URL forever? Use 301.
• Moved from HTTP to HTTPS? Use 301, once you are sure it works.
• Running an A/B test? Use 302.
• Sending users to a sale page for one week? Use 302.
• Page is out of stock for a few days? Use 302, if you must redirect.
• Login or auth redirect? Usually 302.

Here is the key rule:

Permanent redirect decisions need confidence.

If you are still testing, do not rush into 301s. Use 302s first. Once the flow works, switch the right ones to 301.

Places to check when the loop will not die

Redirect rules can live in too many places. Yes, that is as annoying as it sounds.

Check these spots:

• Server config: Apache, Nginx, LiteSpeed, IIS.
• .htaccess file: Common on Apache sites.
• CMS settings: WordPress, Shopify, Drupal, and others.
• Plugins: SEO tools, redirect managers, security tools.
• CDN rules: Cloudflare, Fastly, Akamai, and similar services.
• Load balancers: They may force HTTPS.
• App code: Middleware can redirect requests.

Expect to waste time on duplicated rules. One tool says “force HTTPS.” Another says the same thing. A third tool tries to “fix” it back. Lovely.

A simple fix example

Bad setup:

• CDN redirects http://example.com to https://www.example.com.
• Server redirects www.example.com to example.com.
• CMS redirects https://example.com to http://example.com.

That is not a redirect plan. That is three systems arguing.

Better setup:

• Pick one final version: https://www.example.com.
• Redirect all other versions there.
• Use one main layer to handle it.
• Make the redirect one hop where possible.
• Use 301 only after testing.

Final checklist

• Map the full redirect chain.
• Find the repeated URL.
• Check 301s for cached mistakes.
• Check 302s for login or cookie issues.
• Remove duplicate rules.
• Pick one final URL format.
• Test in a clean browser.

Redirects are useful. Redirect loops are not. Keep the chain short. Use 301 for forever. Use 302 for right now. And never let three tools fight over the same URL.