Error 431 when trying to access the Qlik Sense Management Console or Hub

[Boris_Iwan]

When trying to access the Qlik Sense Management Console (QMC) or Hub, the message HTTP error 431 returns the status code:

Request header fields too large

Environment

• Qlik Sense Enterprise on Windows 

• The HTTP 431 Request Header Fields Too Large response status code indicates that the server refuses to process the request because the request’s HTTP headers are too long.
• There is a limitation on HTTP Header size in Windows and Qlik Sense follows it.
  The maximum header length is 16 KB.

Resolution:

The information in this article is provided as-is and to be used at own discretion. Depending on tool(s) used, customization(s), and/or other factors ongoing support on the solution below may not be provided by Qlik Support.

1.  Follow the instruction from that article - Qlik Sense HTTP Header size restriction
for the proxy configuration
2. For the microservices please change the header size in services.conf. Note: Be aware that there is a risk with doing this since it affects all other programs on the machine using the built-in HTTP stack - Qlik Sense Client Managed: Adjust the MaxHttpHeaderSize for the Micro Services run by the ServiceDis...