Browser / Error Record

Objective

To identify errors in browser function and provide corresponding causes and resolutions

Error Message
	Bad Message 431 — Reason: Request header fields too large
Affected User / Action	Community user receives this error when attempting to access certain Miami websites or applications
Cause	The 431 error typically occurs with Miami systems that use Shibboleth for authentication and is triggered by an HTTP cookie header that is too large. In other words, your web browser is full of cookies
General Resolution	This issue can be resolved by clearing your web browser's cookies. Simply follow the appropriate instructions to clear all cookies from your browser of choice
Specific Resolution	Clear browser cookies from muidp.miamioh.edu and the target web site into which you are logging: Chrome: Delete, allow and manage cookies - Computer - Google Chrome Help. You can choose to delete existing cookies, allow or block all cookies, and set preferences for certain websites Firefox: Clear cookies and site data \| Firefox Help. Learn how to delete cookies that store website preferences and login status, remove site data, and clear cached web content Safari: Clear cookies. In Safari on your Mac, clear cookies and website data for some or all websites

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