ERR_TOO_MANY_REDIRECTS

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Browser & network

ERR_TOO_MANY_REDIRECTS

The page redirected so many times the browser gave up.

What it means

The page redirected so many times the browser gave up.

Likely cause

A redirect loop — typically conflicting HTTP↔HTTPS or www↔non-www rules, or a proxy/CDN disagreement.

How to fix it

Clear cookies for the site. Site owners: align redirect rules across app, server and CDN (e.g. Cloudflare SSL mode “Full”).

Other Browser & network errors

ERR_CONNECTION_REFUSED The target machine actively refused the connection. ERR_CONNECTION_TIMED_OUT The connection attempt got no answer in time. ERR_CONNECTION_RESET The connection to the server was reset before the response completed (ERR_CONNECTION_RESET). ERR_CONNECTION_CLOSED The server closed the connection unexpectedly while the browser was loading the page (ERR_CONNECTION_CLOSED). ERR_NAME_NOT_RESOLVED The domain name could not be translated into an IP address. DNS_PROBE_FINISHED_NXDOMAIN DNS answered: this domain does not exist. ERR_INTERNET_DISCONNECTED The browser has no active internet connection (ERR_INTERNET_DISCONNECTED). ERR_TIMED_OUT The server took too long to respond and the request timed out (ERR_TIMED_OUT). ERR_ADDRESS_UNREACHABLE The browser could not reach the server's IP address (ERR_ADDRESS_UNREACHABLE). ERR_SSL_PROTOCOL_ERROR The secure connection could not be established. NET::ERR_CERT_AUTHORITY_INVALID The site’s certificate is not signed by a trusted authority. NET::ERR_CERT_DATE_INVALID The site's TLS certificate is expired or not yet valid (NET::ERR_CERT_DATE_INVALID). NET::ERR_CERT_COMMON_NAME_INVALID The site's TLS certificate does not match the domain being visited (NET::ERR_CERT_COMMON_NAME_INVALID). ERR_EMPTY_RESPONSE The server closed the connection without sending any data. ERR_CACHE_MISS The browser needed to re-submit a form but the cached data was gone. ERR_QUIC_PROTOCOL_ERROR The QUIC/HTTP-3 connection failed. ERR_BLOCKED_BY_CLIENT A browser extension or client-side tool blocked the request (ERR_BLOCKED_BY_CLIENT). ERR_FILE_NOT_FOUND A locally referenced file could not be found (ERR_FILE_NOT_FOUND).

About Error Code Lookup

The Error Code Lookup is a searchable directory of more than 200 common error messages and codes across 12 categories: HTTP status codes, Windows error codes, browser and network errors, JavaScript, Python, PHP, Node.js and npm, Java, MySQL, Git, Linux shell errors and email/SMTP codes. Every entry is written in plain language for quick troubleshooting.

Each error is explained in three parts: what the message actually means, what usually causes it and concrete steps to fix it. That structure turns a cryptic string like ERR_CONNECTION_REFUSED or 0x80070005 into an actionable checklist instead of a guessing game.

You can filter the list by category, search by code, constant or message fragment, and copy any code with one click. Every error also has its own dedicated page with related errors from the same category, so you can bookmark or share a direct link to the exact fix.

How to use Error Code Lookup

  1. Type the error code or message into the search box — for example 404, ERR_NAME_NOT_RESOLVED or 0x80070005.
  2. Narrow the results with the category filter (HTTP, Windows, JavaScript, MySQL and so on) if the search returns too many entries.
  3. Open the matching entry to read what it means, its likely cause and how to fix it.
  4. Use the copy button to grab the exact code for a bug report or support ticket.
  5. Check the related errors section for other errors from the same category.

Frequently asked questions

It covers 12 categories: HTTP status codes, Windows system errors, browser and network errors, JavaScript, Python, PHP, Node.js and npm, Java, MySQL, Git, Linux shell errors and email/SMTP reply codes — more than 200 entries in total.

Search with fewer words. The shortest unique part works best: just the numeric code (“404”, “0x80070005”) or the constant name (“ERR_NAME_NOT_RESOLVED”) rather than the full sentence your system printed.

Yes. Each entry has a dedicated detail page explaining the meaning, likely cause and fix, plus related errors from the same category. You can bookmark it or send the link directly to a colleague or a support ticket.

The fixes describe the standard, widely accepted resolution for each error. Still, read the likely-cause section first — the same code can have several triggers, and matching the cause to your situation tells you which fix applies.

Yes, it is completely free. You can search, browse the category directory and open as many error detail pages as you need without an account.
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