Bad Request - Header Field Too Long HTTP Error 400. A request header field is too long.

Issue

Bad Request - Header Field Too Long HTTP Error 400 . A request header field is too long.

Environment

Web browsers (e.g. Chrome, Edge, Firefox, Safari)

Cause

 

Resolution

Clear cache in Chrome: 

  

Clear cache in Edge: 

  

Clear cache in Firefox: 

  

Clear cache in Safari: 

 

Clear cache in Chrome/Firefox (MAC): 

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