IBM Support

Request Header Field Size Exceeds Limit for Web server

Troubleshooting


Problem

Request to IBM HTTP Server fails with Response code 400.

Symptom

Response from the browser could be shown like this:
Bad Request
Your browser sent a request that this server could not understand.
Size of a request header field exceeds server limit.

IBM HTTP Server Error.log shows the following message:
"request failed: error reading the headers"

[{"Product":{"code":"SSEQTJ","label":"IBM HTTP Server"},"Business Unit":{"code":"BU059","label":"IBM Software w\/o TPS"},"Component":"Base Server","Platform":[{"code":"PF002","label":"AIX"},{"code":"PF010","label":"HP-UX"},{"code":"PF016","label":"Linux"},{"code":"PF035","label":"z\/OS"},{"code":"PF012","label":"IBM i"},{"code":"PF027","label":"Solaris"},{"code":"PF033","label":"Windows"}],"Version":"7.0","Edition":"","Line of Business":{"code":"LOB45","label":"Automation"}}]

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Document Information

More support for:
IBM HTTP Server

Software version:
7.0

Operating system(s):
AIX, HP-UX, Linux, z/OS, IBM i, Solaris, Windows

Document number:
626135

Modified date:
07 September 2022

UID

swg21384722

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