HTTP 100 Continue

HTTP 100 Continue indicates a informational response outcome.

What it means

Continue describes how the server processed the request and what the client should do next.

Why it happens

Common triggers include protocol conditions, routing decisions, and application behavior.

Common causes

Normal protocol behavior

How to fix it

No fix needed

Example request/response

GET /example HTTP/1.1
Host: errorlookup.com

HTTP/1.1 100 Continue

Browser/dev/server context

Use browser network tools, server logs, and APM traces together when diagnosing HTTP 100.

Related status codes

FAQ

Is HTTP 100 officially assigned?

Yes. This code is assigned in the IANA registry.