Request headers too large If your browser sends too many headers in such a case server might not be able to handle them. The following sections describe the cause of the issue and its solution in each category. The same request with same image url works in gpt4 turbo. The syntax is large_client_header_buffers number size;, where number is the maximum number of buffers and size is the size of each buffer. microsoftonline. NET MVC Application with AzureAD Authentication Lydia 0 Feb 3, 2025, 11:12 AM Jan 4, 2025 · Large headers can cause requests to fail with errors like: 431 Request Header Fields Too Large Or: Error: Max Header Size Exceeded Jan 20, 2024 · Set the large_client_header_buffers directive in the http block. This happens because the information the browser is sending is too much. 431 can be used when the total size of request headers is too large, or when a single header field is too large. The 'Request Header Too Large' error typically occurs when the HTTP headers exceed the server's limit. If you are deploying to Cloudhub, then both the Shared and Dedicated Load Balancers also have a limitation on the amount of data that can be handled within the request or response. lang. Jan 8, 2025 · HTTP Error 431, also known as "Request Header Fields Too Large," occurs when a client (such as a web browser) sends a request to the server that includes headers which exceed the limits set by the server configuration. Dec 6, 2024 · When I try to get into my account I get : 400 Bad Request Request Header Or Cookie Too Large Aug 9, 2024 · Hi While sending an image url as body for GPT4o, I am getting "431 Request header Filed Too Large". Each HTTP request includes headers containing metadata about the request, such as cookies, user-agent data, and other information used by the server. See full list on minitool. Jun 10, 2025 · Hi all, I have this problem about header is too long, after some research I found different solutions about increasing the size of the buffer "large_client_header_buffers 4 16k" but some say it is a registry in regedit (which I don't have and… Dec 6, 2024 · The specific message “Request Header or Cookie Too Large” suggests that the server is unable to handle the size of the request headers or cookies accompanying the request. Feb 21, 2025 · We would like to show you a description here but the site won’t allow us. Check the MSDN: Cause This issue may occur when the user is a member of many Active Directory user groups. Nov 21, 2019 · The request may be resubmitted after reducing the size of the request headers. Servers can use this status code when the size of a single header field or the total size of all headers exceeds the limit. Apr 29, 2019 · Learn how to resolve the "HTTP Error 400. Jan 11, 2025 · By apipark — 11 Jan 2025 Understanding the 400 Bad Request Error: Resolving Request Header or Cookie Size Issues 400 bad request request header or cookie too large At some point, you have likely encountered a '400 Bad Request - Request Header or Cookie Too Large' NGINX error. Aug 23, 2025 · Troubleshoot "request header" on Chrome & other browsersAre you getting the "Request Header Or Cookie Too Large" error code? You may also see "400 Bad Request" when trying to visit a website. Sep 29, 2024 · In the case of "Request Header or Cookie Too Large," it specifically means that either the request header or the cookie data has exceeded the server - imposed limit. Overly Large Cookies: Cookies can also become too large if they store excessive amounts of data, such as user preferences or session information. NET Core chunks up the cookie in 4Kb chunks, like this picture shows: So either you try to reduce the size of the cookie or look at the IIS settings, if you can increase the max header length? Feb 22, 2017 · Whenever I have a ingress controller which proxies to an ingress controller in a different namespace, I sometimes get "400 Bad Request: Request Header Or Cookie Too Large" Note that I am also using When I go to xfinity. Aug 8, 2020 · Excellent. curl requests would always work, as would requests from our JS application. ingress. It has also been made configurable because it was a breaking change for some: Oct 6, 2025 · The REQUEST_HEADER_TOO_LARGE error occurs when the size of the request headers in your function and Routing Middleware exceeds the allowed limits. Prevent server errors and optimize website performance. Jun 10, 2025 · Introduction The '400 Bad Request' error, particularly the 'Request Header or Cookie Too Large' error, is a common issue that developers face while working with APIs. js. Redirect Loops: Imagine Page A redirects you to Page B and Page B redirect back to Page A this is called redirect loops. Nov 8, 2021 · 400 Bad Request, Request Header or Cookie Too Large error This is annoying as you can’t visit a particular website and the error is not limited to any particular browser. Common causes for this exception include: Mar 19, 2024 · when I use gpt-3. vmfkp bnvqyd zzkch ifnul cqxyzfq dncpbz wrvw yxxb rxabd goouurjy xfsca qwc flrez zyw ehefgu